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Being especially skilled at rubbing one out.
When you can toss off effiiently and on queue, you done smackwell.
by bonzaimagee April 07, 2006
This word is used to describe a good hit (smack) or a decent, entertaining beating (of someone other than yourself).
Guy 1: Did you see that dude pummel that one guy?

Guy 2: Yea, he gave him the smackwell.
by Pervis Jervis March 02, 2009