Acronym for Some People Would Pay Good Money. Alluding to an act being offered for free, usually of a sexual nature, that the person believes most people would be happy to pay for. Usually said in response to the recipient declining or not appreciating said act.
<following inadvertently gobbing at someone whilst speaking to them> "What's up with you - SPWPGM for me to gob on them."
by VicD October 02, 2009