Bad Grandpa is an Academy Award–nominated film. For makeup—which it probably deserves. As professional prankster Johnny Knoxville explained to Jon Stewart during his interview on The Daily Show last night, without Bad Grandpa's makeup artists, none of the pranks would be possible. Because when Knoxville goes out in the world as himself, one of two things are likely to happen. In the past, strangers would always try to fight or injure him. These days, they want Knoxville to injure them. Or more specifically, to hit them in the nuts.

Watch the interview below, or click here to see last night's Show!