One of many slang words for semen. The male reproductive fluid, semen (or jizz) consists of a soap-like substance (secreted by the prostate and seminal vesicles), sperm, fructose (non-sweet sugar), and water. Its major purpose is to fertilize the ova (or "eggs") in most mammals and select other jawed vertebrates, and it goes by MANY names. It is secreted in the process scientifically known as ejaculation
, during the male orgasm
See also cum
Dude, stay away from that; it's a jizz-free plant!
Dude, my girlfriend got real pissed, because I got jizz all over her face last night!