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1.
A comical/slang phrase used to describe a mans ejaculatory fluids.

Or... a funny name for cum. ;)
Dirk shot population paste all over Brooke's back
by Crin February 15, 2005
 
2.
The steamy liquid of a man that helps make childern. This nice substance is also used in porn movies to go all over the faces of the woman or gay man.
Population Paste was stuck in her throat! Wait..wha?
by WHAAAAA August 01, 2003
 
3.
a male sperm load presented for female enjoyment
Tracey longed for a taste of my population paste.I gave her a hearty sample poste haste.

A good lyric me thinks!
by Rip Torn December 28, 2006
 
4.
is an organic fluid known as semen that usually contains spermatozoa. It is secreted by the gonads (sexual glands) and other sexual organs of male or hermaphroditic animals, including slugs, for fertilization of female ova. The process of discharge is called ejaculation.
I need to go unload some population paste.
by MrPowers June 01, 2012