What do Usher, Sean Penn and Streisand have in common?

They are all shitty tippers — when they bother to tip. Usher apparently once left his autograph in lieu of a gratiuity.

Barbra Streisand is mentioned again and again for being a cheap tipper as well as a rude and demanding customer. Glamorati says, “Doesn’t always tip.” Thefrisky.com notes that at a New York restaurant, Babs once “left a $10 tip for a $457 tab.”

I was stiffed by Evander Holyfield back when I parked cars at the old Prince of Wales in Midtown. Some 15 years later I took great satisfaction in writing an article about the foreclosure of his south Atlanta estate.

Karma’s a bitch, and so am I.