look up any word, like sparkle pony:
 
43.
1. More than one penis.

2. The word you get when you type penis too fast and forget the "s".
1. When Susie crashed the all-boy sleepover, she was hoping all the peni would fit in her.

2. Rick: haha the Giants lost

Bob: suck my peni

Rick: wait you have more than one?

Bob: no you dumbass i forgot to type the s.
by Tikibarberfan March 02, 2010
 
44.
The most magical tool on earth
Dan's penis is so magical that he created new life with it!!
by MonsterMax December 09, 2010
 
45.
Something that 100% of San Francisco males like to suck.
My penis just juiced itself up!!!
by Evster February 10, 2005
 
46.
P.E.N.I.S. Paternal Egg Nourishing Insertion System
The homosapien male fertilizes a female's egg using a PENIS as a means of giving the fallopian tube swim team a head start.
by fiberoptimist January 26, 2008
 
47.
a very rare tool that the girls want and the guys want more of. Also controls 2/3 of the male brain.

the strongest muscle in the human body.
my penis has some sick torque dude, can do almost 350.
 
48.
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
 
49.
The plural of and from the term of penis meaning: more than one penis.
"look at those peni"
by anon November 01, 2004