Guy 2: Yea! she was straight merkin.
Lannah: I hate to merk, but my cousin is lookin fine tonight!
Girl 1: Doesn't his new girlfriend look JUST like his sister?!
Girl 2: OMG he is SO MERKING!
Roots in the word "merkin," a Shakespearien word referring to a women's pubic wig designed to cover up venereal diseases.
As in: "Do you take my beard for a merkin?"