John Cho and Kal Penn are starring in their third 'Harold & Kumar' film this holiday season, but that doesn't mean they do everything together. John Cho clarified this for Jay Leno on 'The Tonight Show' (Weeknights, 11:35PM ET on NBC) when the host asked him if he'd ever worked in the White House like Penn did.

Cho has been to the White House, though, and got a special treat while he was there. Both he and his father were born in Korea -- his father walked from North to South when war broke out -- so they were honored to met the president of South Korea, and then the president of the United States.

As for those 'Harold & Kumar' movies, Penn said that President Obama is very pop culture-savvy, but "I never figured out the appropriate time to ask the President of the United States if he knew that I played a stoner who escaped from Guantanamo Bay."