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1.
After a session of fellatio in which she swallows, a woman laughs so hard the semen is released through her nasal passage onto her upper lip.
Angela laughed so hard at Drew's squirming that splooge dribbled out of her nose, so Drew said "Merr, smuttynose!"
by Devondre September 06, 2007
 
2.
What you get when you eat out a girl from behind.
Damn son, you must have been eatin that pussy from the back cause you got a smuttynose.
by T=Pain April 19, 2008