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1.
To unknowingly french kiss a girl shortly after she has performed oral sex on a friend.
After the stripper and I left the bathroom stall, my friends threw salami at me and told me I had been fitzed.
by tmplyr April 28, 2010
 
2.
To thumb someones ass
he fitzed her while she wasn't looking
by bloobfloob February 02, 2008