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1.
1) When you use a chick-fil-a sandwich to masturbate.

2) When someone performs filatio while eating a chick-fil-a or having just eaten it so that their breath is fresh with chicken and peanut oil.
1) Man it's bad news when I get hungry and horny because I'm liable to forget which hand's doing what and I'll end up giving myself the old chick-fil-atio.

2) Big girls give the best head, but sometimes you need to entice them with a free sandwich...Chick-fil-atio!
by durtysoufcraka October 29, 2009
 
2.
Giving or receiving a gayboy glory-hole blowjob in a Chick-fil-a bathroom stall.
Dan Cathy sure delivers the best chick-fil-atio in his restaurants' bathrooms--except on Sunday.
by JonFondle July 27, 2012
 
3.
The act of a man receiving fellatio in a Chick-fil-A restaurant.
The bathrooms need to be cleaned. Looks like a lot of Chick-fil-Atio went down.
by twigger21 July 16, 2010
 
4.
The act of performing fellatio in a Chick-Fil-A parking lot.
Wow, chick-fil-atio has been on the rise lately. Nowadays it seems like you can't order some waffle fries without stumbling upon a whole crowd of young men orally pleasuring one another!
by The Gay Agenda August 12, 2012
 
5.
The act of one man giving another man a blowjob on a fast food chain's property.
My boyfriend performed chickfilatio on me in a Micky D's parking lot last night.
by SMTWTFSK August 02, 2012