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1.
After a reasonable amount of intercourse, the penis is removed from the vagina and slapped across the female's mouth, leaving residual sexual fluids, both male and female. The result is a kind of greasy mouth, comparable to if someone were to slap bacon on their lips.
John: I heard you got post-sex head last night, right on!
Adam: No, i just gave her a bacon smile.
by Goodlum December 05, 2010