“My mother taught me about the science of osmosis—‘Shut your mouth and eat your supper!’”

“Shut your mouth and eat your supper!” is what a parent might say to a child—although food can’t get in the mouth if it’s shut. “Some of the funniest memories came from pure parent-to-child anger: ‘Shut your mouth and eat…’” was cited in 1977. “If you fall out of that tree and break both legs, don’t come running to me. Be quiet when you’re on the phone. Just shut your mouth and eat” was cited in 1991.
 
By 2000, the saying was grouped with other jocular “mom” expressions:
 
“My mama taught me about the science of OSMOSIS—
‘Shut your mouth and eat your supper!’”
     
 
Google Books
Kulchur
Volumes 8-11
1962
Pg. 6:
PHILIP: Shut your mouth and eat your breakfast.
ELEANOR: (Childishly.) I can’t eat with my mouth shut.
 
11 September 1977, Sunday World-Herald(Omaha, NE), “What Happened to Homemade Fun? Today’s Children Are Short 30-Year-Olds” by Jean Sigler, pg. 14-E, col. 4:
Some of the funniest memories came from pure parent-to-child anger: “Shut your mouth and eat,” “Don’t talk with your mouth open,” “You’ll have fun whether you like it or not!”
   
19 May 1991, The Plain Dealer (Cleveland,OH), “Parents get a dose of Dr. Laugh” by Don Bean, pg. 5-B, col. 4:
“If you fall out of that tree and break both legs, don’t come running to me. Be quiet when you’re on the phone. Just shut your mouth and eat. Get me something to spank you with.”
(Ray Guarendi, also known as Dr. Laugh.—ed.)
 
Google Books
When Joseph Met Molly:
A Reader on Yiddish Film
By Sylvia Paskin; European Jewish Publications Society
Nottingham: Five Leaves
1999
Pg. 307:
Interestingly, the mother (Mae Questel) issues the same injunction that was heard in Sleeper, correctly in this instance: “Shut your mouth and eat your dessert”.
(The Woody Allen-directed segment of the 1989 film New York Stories.—ed.)
 
Google Books
A Treasury of Email Humor
Edited by Lisa Marie Meier
Lincoln, NE: iUniverse.com, Inc.
2000
Pg. 116:
My mama taught me about the science of OSMOSIS—
“Shut your mouth and eat your supper!”
   
Google Groups: alt.freemasonry
Mason brothers, please read what happened today.
LPPCQ Snarky
10/31/00
(...)
My mother taught me about the science of OSMOSIS -
“Shut your mouth and eat your supper!”
 
Google Books
Oy!:
The Ultimate Book of Jewish Jokes
By David Minkoff
New York, NY: St. Martin’s Press
2005
Pg. 61:
My mother taught me about the science of osmosis:
“Shut your mouth and eat your supper!”
 
Twitter
funny humour
‏@funnyhumour
My mother taught me about the science of OSMOSIS -“Shut your mouth and eat your supper!”
9:36 AM - 26 Nov 2009
   
Pittsburgh (PA) Tribune-Review
Mother’s lessons are always timely
By Ron Paglia
Thursday, May 8, 2014, 12:01 a.m.
(...)
8. My mother taught me about the science of osmosis. “Shut your mouth and eat your supper.”
 
Twitter
Funny One Liners
‏@funnyoneliners
My mother taught me about the science of osmosis when she told me to “shut your mouth and eat your supper!”
9:20 AM - 18 Dec 2014