Top Definition
The condition of enhanced right arm muscle due to excessive wanking
Simon's arm was hurting this morning? You talking about Simon turner? Yea, he had a pumpers lump from feeding the geese.
#feeding the geese #mastubating #pumping #pumpers #wanking
door The Burt of Punta Dilla Shorts 21 december 2006
5 Words related to Pumpers Lump
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