A sandwich that may or may not have a dead rat inside. Upon ordering the Dead Rat Surprise at any sandwich shop, an employee will slice six loaves of bread and toss a dead rat into one. They will then roll a dice and use the bread indicated by the die for your sandwich. The other loaves of bread will be served to other customers.
I ordered the Dead Rat Surprise at Subway last night. I feel bad for the fool who got the rat sandwich.
by averagemint May 7, 2022

Two toddler siblings take a shared bath. While one contentedly entertains himself, the other stands up behind him and urinates on him.
I only turned my back for a second; when I turned around Manual had initiated a Nicaraguan Sibling Surprise on Isabella. She lucky that he only peed on her back.
by Crack Jacky September 2, 2009

Surprising your girlfriend to a romantic dinner and when you get back sticking your dick in her as a surprise.
Last night I gave my girlfriend a double surprise. She did not expect to get the D after the Horror movie date.
by Zyprexa January 5, 2022

When a man is plowing a woman from behind and is about to ejaculate, he spits on her back to have the woman believe he has finished. When the woman turns around the man dumps his backed up load into her eye followed by a kick to her shin so she hops around with her hand on her eye and screams "ARGH!!".
Ian: I dont think ill be talking to Sarah anymore Bill.
Bill: Why not bro?
Ian: Last night i hit her with the Surprise Pirate. She hopped out the fucking window
Bill: SAV!!!!
Bill: Why not bro?
Ian: Last night i hit her with the Surprise Pirate. She hopped out the fucking window
Bill: SAV!!!!
by ThatDudeGuyMan December 15, 2016

the act of gagging your drunk partner with your penis until they vomit on said penis and then quickly shoving your penis into your partners vagina/anus.
by jimmy McDoogle July 3, 2012

The sexual act of filling your asshole up with whipped cream then proceeding to fart said cream into your partner's mouth.
by Dirk Dasterdly August 13, 2021

When someone drops a bombshell mid-conversation that in no way contributes to the conversation at hand, nor provide anything to build off.
A: “So I made that playlist you asked for.”
B: “Cool. I’m moving to Finland next week.”
A: “...What? Did you just give me a Mongolian Surprise Egg?”
B: “Cool. I’m moving to Finland next week.”
A: “...What? Did you just give me a Mongolian Surprise Egg?”
by someguyeatingwheattoast June 28, 2025
