The appendage used to penetrate a vagina, causing an embryo, therefore a fetus to pop out in 9 months, which eventually resembles a baby....

baby-maker
bell on a pole
bishop
bratwurst
cock
custard launcher
dick
dickie
ding dong mcdork
dong
donger
dork
dragon
errector
fang
ferret
fire hose
heat-seeking moisture missile
hose
Jimmy
John
John Thomas (dated)
joystick
knob
leaky hose
lingam
little Bob
little Elvis
longfellow
love muscle
manhood
meaty
meat popsicle
member
middle stump
monkey
Mr. Squirked
mushroom head
mutton
old boy
old fellow
old man
one-eyed snake
one-eyed trouser-snake
one-eyed monster
pecker
peepee (children's term)
Percy
peter
piss weasle
prick
private part
purple-helmeted warrior of love
purple-headed yogurt flinger
rod
roundhead
sausage
schlong
schmuck, shmuck (Yiddish)
schwanz
schwarz
short arm
skin flute
tassle
third leg
thumper
todger (Australia, UK)
tonk
tool
trouser snake
tubesteak
wang
wang dudle
wick
willy (children's term)
yingyang
yogurt gun
In front of the whole class, Mrs. Johnson said to her student Johnny, stop mastrubating, or I'll rip off your penis and feed it to little Susie over here
by Adam Goldsteinberger June 04, 2007

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The most important and playful of all the body parts.
My penis is a zillion times bigger than your penis!
by spike February 06, 2004

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Something to look up on Urban Dictionary when you have nothing better to do...
I'm bored so I'm going to look up penis on urban dictionary
by fbgnnnnjhhfjgfjkkfhdgjklhfgljk December 09, 2011

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what kind of a moron needs the definition of "penis?"
you gotta be fucking kidding me. looking up "penis" in the urban dictionary? get the hell out before i turn off the internet.
by un-dumbassify yourself, please January 03, 2010

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A brutal south california white power gang. PEN1 or PENI is an abbreviation of 'Public Enemy Number One'.
The recent rise in meth trafficking is credited to Peni
by merkinbjerkin May 02, 2007

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The first weapon a boy is born with. Used for a "cock slap".
I whipped out my penis and cocked slapped that tree
by Nigga Jew January 30, 2007

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wen theres a whole lotta wangs about
look! im surrounded by a bunch of peni
by Anonymous August 05, 2003

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a really, really small penis. so small it isn't allowed the s on the end.
John has got such a small peni, it looks like a baby squirrel!
by lemonboy October 02, 2006

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