look up any word, like cleveland steamer:
 
1.
Doin the pretzel to a girl is when you put your dick in a pretzel and stick it in her PUUUUSSSSAAAAAYY!

Akhtar: "so dude i was at a party and this babe was all over Petroski and you know what she said... tell em Petroski"

Petroski: "she was like Petroski why don't you turn your dick into a pretzel and stick it up my PUUUSSSSSAAAAYY!"

thats "The Pretzel"
by B.i.g. Pappa March 09, 2009
 
2.
The Pretzel is the practice of a girl pooping halfway.The male then gives the poop head then shoves it back into the girls butt.
"Please will you do the pretzel with me?"
by blinkavaplus44gc March 17, 2008