On ‘Late Night with Jimmy Fallon’ last night, the Donald dropped in to promote the upcoming season of NBC’s “The Celebrity Apprentice” and was all about the business.

He talked about the twelfth season of the show that is ‘guaranteed’ to be bigger and better than ever, with 18 celebrities and 15 episodes. He had a few choice words to say about some of the contestants:

On American Idol’s Clay Aiken: ”He’s much different than you’d think. Tough and smart. He really is a tough cookie.

On Real Housewive’s Teresa Giudice: ”Aw, she’s great. She actually flips a table, she gets so angry at a group,” said Trump. “She’s a very calm person … until she gets angry.  And then she’s nasty, but she’s terrific.”

On Twisted Sister’s Dee Snider: ”He’s very talented, very tough — tough player, smart as can be, and you watch what happens to him after this show. He’s going to go places, he’s really terrific.”

Both Snider and Giudice were surprise-guests on Fallon last night, joining Trump and Fallon for a classic game of “Password” – and although most of the questions were Valentine’s Day related, the easiest of them all was still a miss of the Donald.

Snider had the word “Fired” – so he pointed at Trump and said, “You’re…”

He was clueless. If only ‘illegal immigration’ was one of the answers. Check out the embarrassing bafoonery below.