Dee Snider – Giving Donald Trump a Freebie ... on Twisted Anthem (VIDEO)

Twisted Sister frontman Dee Snider says he's totally cool with Donald Trump using "We're Not Going To Take It” as his campaign song ... but don't assume that means he's also giving him a vote.

Snider told our photog in Bev Hills why the Twisted hit song is perfect for Trump, and in a word .. it's all about rebellion. But watch ... Dee thinks there's another candidate who should be jumping on the Twisted Sister bandwagon, and yes ... he can get it for free too.

As for who he's backing at the polls -- Dee sounds undecided.