The act of inserting a pineapple in a sleeping friend's anus and then punching them in the face when they wake up.
Travis: Yo Danny is doing a juice cleanse.
Eric: We should help him out and give him a Mai Tai Surprise.
Eric: We should help him out and give him a Mai Tai Surprise.
by travisonfire January 16, 2013

When your hitting your girl’s pussy from behind and she surprises you with a reach back and grabs your knob and glides it up and in the booty hole for a little surprise anal.
by Eaton Holgoode February 20, 2018

Strawberry chocolate surprise is when you have anal sex and pull out and there's blood and shit on ya dick.
Bob pulled his dick out of Mary's butthole and looked down in horror, realizing he had a strawberry chocolate surprise.
by Roflles July 2, 2017

when your fucking a girl up, and not knowing she has lazy eye it goes to the side before your about to cum, and you loose all purpose of having sex with her, grab your clothes and leave
by punjabiallahpraiser July 12, 2010

have unprotected sex with a woman, then go to another woman's place and have her suck you off. when your done ask her how it tasted. then tell her that its called a tuna melt surprise
by joeyab July 13, 2011

When a lil Asian boy watches you eat ramen off your girls pussy, but you eat it so good off her that her juice becomes the broth
by BigPeePeePooPoo November 22, 2019

aka SBM, when you think you are just going to the bathroom to take a piss, and you unexpectedly have the urge to poop.
"Dude, what took you so long to piss? Did you fall in?!"
"Nah man, I had a Surprise Bowel Movement."
"Nah man, I had a Surprise Bowel Movement."
by Rabadina March 25, 2009
