David Spade Confused Ellen DeGeneres for Justin Bieber at Her Birthday Party - Watch!

David Spade is opening up about a hilarious mistake!

The 53-year-old actor and comedian made an appearance on The Ellen DeGeneres Show on Thursday (February 15).

PHOTOS: Check out the latest pics of Ellen DeGeneres

During his appearance, David shared some inside scoop from Ellen‘s star-studded 60th birthday earlier in the month – and joked about why he didn’t say he Ellen immediately when he first arrived.

David also talked about attending the Sean Penn & Friends Haiti Rising Gala in January, as well as Brad Pitt‘s unsuccessful six figure auction bid to watch Game of Thrones with Emilia Clarke.

Watch below!