UFC champ Michael Bisping says Luke Rockhold was a real "a-hole" after UFC 199 -- insisting he TRIED to be respectful to Luke ... but Rockhold was too busy being a "sore loser."
FYI, Rockhold blasted Bisping on Instagram Tuesday morning ... calling the guy "classless" for refusing to shake his hand after beating him on Saturday night.
"I felt it was a classless move on his part," Rockhold said ... "I don't believe in kicking a man when he's down."
Bisping joined the guys on the "TMZ Sports" TV show (airs tonight on FS1) -- and said Luke's completely delusional because he actually tried to shake his hand TWICE.
By the way, Bisping also says he's not ready to retire just yet because a true champion defends his belt!!!
There's a lot more -- make sure to watch the whole thing tonight on FS1 at 9 PM PT, 12 ET.
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