Today’s thorny etiquette question: How should one respond when one is being bitten by Suge Knight?

Such was the quandary of “Entourage’s” young star Kevin Connolly following ESPN’s ESPY Awards last Wednesday in Los Angeles.

Several sources tell us the two were playfully wrestling at the late-night after-party thrown by awards host LeBron James at the Mondrian hotel.

“Kevin and Suge were wrestling and Suge literally bit Kevin’s finger,” says a witness. “He was bleeding everywhere.”

Was Kevin fighting back?

“No way! He was too busy bleeding.”

Perhaps the thing to do when being chomped on by a man with Mr. Knight’s complicated reputation is to simply say “Thank you.”

“Kevin didn’t seem too upset,” says the spy, “although he must have been in tons of pain.”