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1.
noun. ejaculate, sperm

There is ejac on the bed.

Thank you for swallowing my ejac.
by Calvin Broadus November 19, 2006
 
2.
Slang term for the art of ejaculation/cumming.
Hey, did u ejac last night?

Ejac into the cup
by im me @ timladd04 on aim October 31, 2004
 
3.
the nickname belonging to elana
"yo ejac, i like your jersey.. im going to have mine say 'ulation' on the back.. get it? get it?"
by ejac April 07, 2005