An endearing term used for a girl with a butt so attractive you could jizz all over it...
'Hey spunky bum, you're Iookin hot tonight'...
by sss1600 March 6, 2015
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To fart bubbles of semen after an act of anal love-making.
My boyfriend blasted me with such a huge load last night I’m still playing the spunky bum trumpet.
by Harry Sausage January 14, 2005
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