Sugar Ain't Too Good - S1.E4

Because Sugar is such a promiscuous slut, Kim probably caught crabs just by spending the night in her bed platonically. Dale is shocked to find the same intimate crowding on Stella, though each blames the other. Stella ends up thinking she passed the lice 'from Dale' by borrowed jeans to Kim, instead of the other way around. Even gullible Nathan gets suspicious about all the private laundry, but remains clueless- until the evidence crawls over his privates.