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1.
Slang for a penis because as one cums, (unless you're really fucking old or have had some sort of injury) the first few orgasms squirt.
Johnny McWarguy: Hey Jen, wanna see my squirt gun?
Jen: Uhhhm... ok?
Johnny McWarguy: *unzips pants and squirts his load in Jen's face*
Jen: ...I'm going to kill you.
by Johnny McWarguy April 30, 2008
 
2.
When a female (or transgender or pre-op) ejaculates from their vagina. The vagina can then be called a 'squirt gun'.
"want to see me ejaculate from my squirt gun?"
"sure!"
" :D "
by coco69 August 12, 2012
 
3.
Girl who squirts several times during intercourse.
Jennifer was a squirt gun last night during sex.
by Squirt.Gun.Owner October 15, 2010
 
4.
Ejaculating furiously in short, rhythmic burts.
I was blastin my squirt gun at the back of this chick's head at the game last night
by Your Mom April 10, 2005
 
5.
A playful term junkies sometimes use to refer to syringes.
Which pharmacies in this town sell squirtguns over the counter?
by megacure June 15, 2010