A person who bluntly says what no one else will in the most inappropriate moments and at the most inappropriate places, usually pertaining to raunchy sexual encounters said person has or wants to experience.
I was a total smearman the other night and told my fiancee's parents about a 10 dollar hooker i tea bagged the night before in Tijuana.

dude, he totally pulled a smearman at church last sunday, talking about how he gave your sister a spiderman. When the minister asked him what he was talking about he proceeded to telling a story of how he fucked his wife.
by djblankshot October 30, 2007
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