2 definitions by Lachlan and Swanny

Adj. (mass-terr-bash)
The act of self pleasuring aggressively, while thinking about a person , place or thing you immensely dislike. Usually occurring from frustration or substance abuse.
"God I really can't stand my ex, she's an absolute mess. Definitely calls for a masturbash."
by Lachlan and Swanny April 26, 2015
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A hainous sexual performance in which a man engages in intercourse with 5 women. The man first performs cunnilingus on the first woman, the second and third women are getting probed with two to three fingers in their vaginas. The forth woman is riding the man’s penis in either the cowgirl or the (optional) reserve cowgirl position. The fifth woman is loudly humming on the mans testicles making sure that this sexual act is well and truely heard if there are any people in proximity to this act.
“I had an epic bloomin last night with the birds from work.”

You deserved it you legend, but bloody hell that humming was loud!”

“I was at the rippers last night and copped a mad bloomin with all the strippers!
Oh yeah, how loud was the hum?
Fucken loud mate!”
by Lachlan and Swanny August 24, 2017
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