Phoebe: Hey, have you guys seen Monica?

Ross: Uh, actually I think she went to the salon.

Phoebe: Oh yeah, oh, she went to the salon alright…

(Monica enters, with her hair braided and little shells at the end)

Monica: Check it out!

Phoebe: Who’s day just got better? CHANDLER!

Explanation:

check somebody/something ↔ out   to look at someone or something because they are

interesting or attractive :

Hey, check out that car!

هی، یه نگاهی بنداز به اون ماشین.