“How do you make an egg roll?”/“Push it.”

An obvious “egg roll” pun is:
 
Q: How do you make an egg roll?
A: Push it.
 
The egg roll joke has been cited in print since at least 1984.
 
“How do you make a sausage roll?”/“Push it,” “How do you make a spring roll?”/“Push it” and “How do you make a Swiss roll?”/“Push him down a hill” are similar “roll” riddles.
     
 
Wikipedia: Egg roll
The term egg roll is commonly used in English speaking countries to refer to variations of fried foods involving filling wrapped in flat bread. The dish is considered a subtype of the spring roll in mainland China, with the Chinese term meaning egg roll referring to the biscuit roll instead. Egg rolls are considered distinct from spring rolls outside of mainland China.
   
Google Books
November 1984, Boys’ Life, “Think & Grin,” pg. 73, col. 3:
Chef Freddy: How do you make an egg roll?
Chef Eddy: Push it.— Bill Jacobson, Cypress, Calif.
 
7 March 1994, Kokomo (IN) Tribune, “A little bit of humor,” pg. 20, col. 5:
Ann: How do you make an egg roll”
Amy: Push it.
   
17 October 1995, Chicago (IL) Tribune, “Playing Around,” pg. 8:
How do you make an egg roll for dinner?
Push it.
 
Google Books
Squeaky Clean Jokes for Kids
By Bob Phillips and Steve Russo
Eugene, OR: Harvest House Publishers
1997
Pg. 17:
Leroy & Sidney
Leroy: How do you make an egg roll?
Sidney: I have no clue.
Leroy: Push it.
 
Twitter
Joe Chiappetta
‏@joeychips
Bedtime riddle for you. “How do you make an egg roll?”
“Push it down a hill,” replies Silly Daddy. Read my comics at http://www.sillydaddy.net
10:56 PM - 22 Jun 2007
 
Twitter
Maggie Fitts
‏@mmmmfitts
How do you make an egg roll? (Hint: this is a Laffy Taffy joke.)
12:01 PM - 5 Dec 2007
 
Google Books
The Mammoth Book of Really Silly Jokes
By Geoff Tibballs
London: Constable & Robinson Ltd
2011
Pg. 78:
How do you make an egg roll?
Push it down a hill.
 
Google Books
The Super, Epic, Mega Joke Book for Kids
By Whee Winn
Grand Rapids, MI: Zonderkidz
2016
Pg. ?:
How do you make an egg roll?
Push it.