"What do you call a dinosaur made of…

Pyrex is a brand of glassware and kitchenware. The “Pyrex” name has also been used for for non-glass kitchen utensils and cookware. “Pyrex” has nothing to do with the Tyrannosaurus dinosaur known as “T-Rex,” but there are jokes.

“What is a dog made of glass called? Py-rex.” was printed in the book Pet Jokes That Will Make You Howl! (2005) by Terry Pierce and Ruth Musgrave. “RT @Thirtyt: In the style of @Knaw_Says was Py-rex an ovenproof transparent dinosaur?” was posted on Twitter by Gavin Cameron on June 9, 2010.

“What do you call a dinosaur made out of glass? A Py-rex” was posted on Reddit—Jokes on October 14, 2018. “What do you call a dinosaur who is easy to clean, heat resistant and long lasting? py-rex” was posted on Reddit—Dadjokes on October 26, 2020.

Wikipedia: Pyrex
Pyrex (trademarked as PYREX) is a brand introduced by Corning Inc. in 1915 for a line of clear, low-thermal-expansion borosilicate glass used for laboratory glassware and kitchenware. It was later expanded to include clear and opal ware products made of soda-lime glass.

Corning no longer manufactures or markets consumer glass kitchenware and bakeware. Corelle Brands, which was spun off from Corning Inc. in 1998 under the name Corning Consumer Products Company and since renamed, continues to license the pyrex (all lowercase) brand for their tempered soda-lime glass line of kitchenware products sold for the consumer market in the United States, South America, and Asia. In the regions of Europe, Africa, and the Middle East, the PYREX (all uppercase) brand is licensed by International Cookware for use on their borosilicate glass products. The brand name has also been used for non-glass kitchen utensils and cookware in various regions for several decades.

Google Books
Pet Jokes That Will Make You Howl!
By Terry Pierce and Ruth Musgrave
New York, NY: Sterling Publishing Company, Inc.
2005
Pg. 39:
What is a dog made of glass called?
Py-rex.

Twitter
Gavin Cameron
@LadyGavGav
RT @Thirtyt: In the style of @Knaw_Says was Py-rex an ovenproof transparent dinosaur? Goodnight. // I’m glad to know that I have an impact.
11:37 AM · Jun 9, 2010·Twitter Web Client

Twitter
Gary A Williams
@GaryAWilliams
Yes, T-Rex was a fearsome dinosaur, but the Py-rex could withstand temperatures up to 450 degrees. #nowUknow
3:56 AM · Jun 17, 2014·Twitter for iPhone

Twitter
Alan
@wilshirecomedy
Just released still from the upcoming Jurassic World movie.
One of the new dinosaurs
PY-REX
10:34 PM · Apr 16, 2015·Twitter Web Client

Twitter
Billy
@billiam606
What do you get when you cross a dinosaur with glass kitchenware? Py-rex
2:52 PM · Oct 11, 2015·Twitter for Android

Reddit—Jokes
Posted by u/Inxect October 14, 2018
What do you call a dinosaur made out of glass?
A Py-rex

Twitter
Neil
@NeilsArsenal
What do you call a dinosaur made out of glass? A Py-rex
7:01 AM · Oct 15, 2018·Twitter Web Client

Twitter
Central Glass & Mirror
@centralglassICT
What do you call a dinosaur made out of glass? A Py-rex! #CentralGlassMirror #FunPun
11:45 AM · Dec 12, 2018·Thryv

Twitter
Quality Glass Inc.
@QualityGlassNY
What do you call a dinosaur made out of glass?
A Py-rex!
10:37 AM · May 8, 2019·Thryv

Twitter
Gabe’s Spotless Window Cleaning
@GabeWindow
What do you call a dinosaur made of glass?
A Py-rex.
#glass #puns #panefulpuns
1:13 PM · Jul 1, 2019·Buffer

Reddit—Dadjokes
Posted by u/byte_marx October 26, 2020
What do you call a dinosaur who is easy to clean, heat resistant and long lasting?
py-rex
I’ll get my coat…

LaffGaff
Strange Dinosaur
October 31, 2020 by laffgaff
What do you call a dinosaur who is easy to clean, heat resistant and long lasting?
Py-rex.

(Trademark)
Word Mark PYREX
Goods and Services IC 021. US 033. G & S: GLASS BAKING WARE. FIRST USE: 19150520. FIRST USE IN COMMERCE: 19150520
Mark Drawing Code (1) TYPED DRAWING
Serial Number 71153796
Filing Date October 6, 1921
Current Basis 1A
Original Filing Basis 1A
Registration Number 0153430
Registration Date March 21, 1922
Owner (REGISTRANT) CORNING GLASS WORKS CORPORATION NEW YORK CORNING NEW YORK 14831
(LAST LISTED OWNER) CORNING INCORPORATED CORPORATION BY CHANGE OF NAME FROM NEW YORK SP-TI-3-1 One Riverfront Plaza CORNING NEW YORK 14831
Assignment Recorded ASSIGNMENT RECORDED
Attorney of Record Paul R. Burke
Prior Registrations 0115846;0141342;0147652
Type of Mark TRADEMARK
Register PRINCIPAL
Affidavit Text SECT 12C. SECT 15. SECT 8 (6-YR). SECTION 8(10-YR) 20110519.
Renewal 5TH RENEWAL 20110519
Live/Dead Indicator LIVE

“What do you call a dinosaur made of glass?”/“A Py-rex.”