Wade Robson's new sexual abuse claim against Michael Jackson is just plain "whack" ... this according to Omarion, who tells TMZ he thinks Wade might be lying to make a quick buck.
The R&B superstar was out at Supperclub in Hollywood last night, when we broke the news to the singer about Wade's new allegation -- that MJ sexually abused him as a child.
Omarion says Robson -- a hugely successful dance choreographer -- might simply be looking for a quick payday. O then goes on to defend MJ.
So, we gotta ask ...