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Aggressively grinding each other while making out.
Abby was derfing so hard last night with him.
derfing by yunglivin September 1, 2019
Related Words
Sex with clothes on
Cooper: hey Claudia wanna go derfing later?
Derfing by Derfingyurrrmom October 30, 2019

Dolphin Derfing

The act of dry humping with oscillations occurring rhythmically taking the form of the wigglings of a dolphin out of water.
Dude are you taking that Provo hair school chick out again? Yeah dude, if I play my cards right we’ll be dolphin derfing hard tonight.
the act of fucking a girl who is way below any normal standards
person 1:so i heard you went derfing last night.
person 2:yeah, I took pcp.

I wanted to go derfing, to I found the girl nicknamed Trailer Trash.

Bonus points if they have a kid.
derfing by fred v. September 15, 2006
When a guy and girl are sexually intimate, the practice of the guy to alternate between bottom and top holes (anus and vagina). No particular pattern of action is required, and the switch-off can be completely random (ie: top, top, bottom, top, bottom, top, bottom, bottom, bottom, top, fist).

Create special patterns to signify festive or celebratory events and occassions; re-live these occassions through fantastic, nostalgic sexual practices!
Donnie: Tim was derfing Julie and covered her vagina with shit.
Darcy: Goddam! O_O
derfing by Pwnforce United December 27, 2005

Stealthie 

when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.

This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"

FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"
Stealthie by gwenhyfar October 2, 2016
Word of the Day on May 25, 2026