Tara Reid -- I'm A Cashnado ... Rainin' Dollas On Drag Queens

Some L.A. drag queens should call FEMA ... earlier this week Tara Reid blew into a gay bar like a category 5 "Sharknado," bringing a torrential downpour of dolla bills with her.

Our drag sources tell us Reid rolled into The Abbey in West Hollywood for Lip Service -- the regular Monday all drag lip-sync show -- and dropped hundreds in GW's while they belted out hits.

We're told she doled out cash from the VIP booth and the performers were more than grateful for the extra green.

But a star can only sit and watch for so long ... she eventually got up and crooned with drag queen Vicky Vox.