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1. Blowing a rasperry on a vagina.

2. When a woman gives oral and then the man ejaculates just over her mouth, giving like a cappuchino moustache effect.
I heard Ryan likes to smuffle his mum.

Lauren doesn't like coffee but doesn't mind smuffle drip.
by hahahhahhahahahlau. March 09, 2010
sticking your head between boobies and going 'brrrrrr'
Every good set of hooters deserves a good smuffle
by kristinathenina December 03, 2008