ninnyfuck 

an immature person.

Angus is such a ninnyfuck!

ninnyfuck by Innocent Tara June 14, 2009

niftyfucktastic 

to fuck one in a nifty fashion

"that was on niftyfucktastic expirence we just had"

niftyfucktastic by sindy April 23, 2003

ninjafuck 

To have sex in a bunk bed without your bunkmate noticing.

Dude, I ninjafucked this girl last night. My roomie had no idea. I guess he likes being rocked to sleep.

ninjafuck by mizzou22 April 1, 2009

Ninifucker 

A ninifucker is a person who fucks multiple guy at different place at the same time

WIERD RIGHT???

Hey you saw that ninifucker that was at the party we went to last night I heard she was also at a bar in Cali at the same time doing another man

Ninifucker by TAseR9 December 8, 2019

ninjafuck 

If I heard this right, it refers to the action of being sexed half-willing, whether out of obligation or whatever motivation (this isn't referring to rape, mind you). It comes from a movie called Dog Park, and I'd like to see the term used more.

"How'd it go last night? Well, she ninjafucked me."

ninjafuck by geoffy mcgee August 5, 2004

niftyfucktastic 

Nifty in a fucked-up kind of way.

Wow, Mallrats was niftyfucktastic.

niftyfucktastic by NightRaven October 9, 2006

ninnywacker 

Just a fail. just an Epic fail of a person. Just no. Just no.

DUDE YOUR A NINNYWACKER
STOP BEING A NINNYWACKER
THAT WAS A NINNYWACKER MOVE

ninnywacker by kinkyllamas August 2, 2011