fisting someone in the anus until widen, then place balls into anus until it tightens, then sing.
Daniel just gave Rachel a Plumb bob
by Penguins on LSD February 18, 2015
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The repeated act of inserting and totally withdrawing an erect penis in the female anus all the way up to and sometimes including the testicals and scrotum.

Nigel: Gee Sharon, your arse looks good enoughe to plumbbob it all night long.
Sharon: Oh my god Nigel, do you really think you could plumbbob me all night long?
by Mr Brodie July 25, 2006
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