What?

Sully's post A Clinton Bimbo Eruption? hits a good point. Bullshit rumors are going to be rampant and South Carolina is infamous for it. But what does this mean, "If she wants to scotch the lesbian rumors, she really should tip better." I know about the Iowa story and from what I can tell it is a little murky but the Clinton campaign made good by going back and giving the waitress $20. Is there some stereotype of lesbians being cheap I'm not aware of?