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1.
Passing gas. Flatulence. Farting
I was going to use the men's room but someone's been busting ghosts inside there.
by Tampopo September 30, 2009
 
2.
Quite similar to "busting nut" it refers to ejaculating, or "Busting Ghost". Derived from people saying, "oh we were just alone watching Ghost Busters," and friends responding, "what? were you two busting ghost."
Oh ya? You mean you were Busting Ghost on her face.
by Barthalimule July 09, 2010