UFC Fighter -- Hit With Designer Purse ... In Epic Trolling (VIDEO)

PURSE ATTACK!!!!!!

A grown ass male UFC fighter threw a designer purse at another grown ass male UFC fighter in Dublin yesterday ... nearly causing a war to break out ... and it's LOADED with backstory.

The purse thrower is Norman Parke -- who chucked the bag at his opponent Reza Madadi at the weigh ins for UFC Fight Night in Dublin.

And why the purse attack???

Turns out, Reza was convicted of robbing a Bottega Veneta store in Stockholm, Sweden -- swiping all sorts of purses in a caper that was caught on tape. He actually served 14 months in prison!

Enter Parke ... who obviously thinks the best way to mess with Reza's head is to bring up the past -- which explains the purse ... and judging by Reza's reaction, the strategy worked.

These two fight tomorrow night ... and if Reza wins, he'll actually be able to BUY his next purse with the prize money.