The Late Show host had actress Lindsay Lohan as a guest for Wednesday's episode, and didn't let the opportunity to question LiLo about her upcoming rehab stint go by. An uncomfortable Lohan tried to deflect Letterman's questions, but he didn't let her off the hook so easily. Letterman asked:
"Aren't you supposed to be in rehab?"
"Don't you watch anything that goes on? What are you a tabloid now? May 2!"
Undeterred, Letterman kept the pressure on Lohan about her issues with alcohol, despite the actress remarking they, "didn't discuss this during the pre-interview." Watch a snippet of the interview after the jump!