Rachel Uchitel -- No Joy Being Called Hooker

Rachel Uchitel is threatening to sue the ladies at "The View" -- or at least one of them -- for suggesting she's a hooker.

Gloria Allred, lawyer for Tiger Wood's alleged mistress #1, is pissed that Joy Behar joked on the show on Thursday, "Yeah, you-ka-tell she's a hooker."

Gloria says the statement was false, defamatory and highly offensive -- and hurtful, too.

G.A. says Rachel is "not amused" because "she values her reputation and her reputation has been damaged..."