One bang 

The act of knocking someone unconcious in one punch.

Oi, give 'im the one bang!

One bang by Tobedottty January 27, 2009

One bang extreme 

A punch so fierce that it kills the receiver or gives them a severe mental disability.

Extremely hard kid: "Are you ready for the One bang Extreme?"

Extremely weak kid: "errm?!"

Ka-pow!

One bang extreme by longleggedcleggyweggy November 18, 2010

Snow Ball One Bang 

When a person receiving a snowball to the face is knocked out or injured.

Hard Kid: "I'm ginna knock this kid out with my snow ball one bang!"

*Launches snowball*

*Crunch and flop*

Snow Ball One Bang by Longleggedcleggyweggy December 1, 2010

dirty one bang 

when someone punch hits or kiks someone once but very hard

"i'm gunna dirty one bang you in the face"

dirty one bang by thenutterishere January 19, 2009

the one bang

when a male thrusts his genitalia into a female and then quickly retracts back leaving thus female unsatisfied and deeply frustrated and gives thus male the feeling of dominance

oi tim, giv her the one bang

the one bang by Looee is a batti crease June 25, 2014

bang one out 

Male: To masturbate. To have a wank.

"Fuck me, she's gorgeous. I'm gonna have to go home and bang one out over her."

bang one out by Esteban Lorenzo July 29, 2003

bang one out 

to quickly and effectively blow your load whether by intercourse or stroke-job

Yo Tahiya, wanna go bang one out in between classes?

bang one out by DickDickerson April 16, 2013