By Erin Strecker
June 22, 2012 at 01:56 PM EDT

Oof, baby.

Justin Bieber was on the Late Show With David Letterman last night, promoting his new album, Believe. The 64-year-old host was at his most curmudgeonly, especially once Bieber displayed his new arm tattoo. Kids today! They release their big summer album and think that gives them the right to deface their bodies! Letterman tried to talk him out of getting another one, but Bieber said he can’t promise that. Letterman persisted, asking the 18-year-old to at least promise not to make his arms look like the Sistine Chapel.

Bieber responded, “I’m not going for the Sixteenth Chapel look.” And Letterman’s day was made.

Check out the video below:

Note to Dave: I don’t think we can blame this on “Canadian high schools.” You can’t just release videos like this and then go on your way to a normal school.

It’s not on the video, but later in the interview, Bieber the Canadian wisely stayed out of the American political fray, declining to endorse either presidential candidate. Too bad, both Mitt Romney and President Obama could have really used more rabid teen girl support.

Read more:

Justin Bieber’s NBC special flops in ratings

‘All Around the World’: 10 Justin Bieber-isms that seem annoying but are actually…cute?

This man has 15 Miley Cyrus tattoos; how many do you have?