Diddy Just Hand Out a Hundred?

Diddy is still all about the Benjamin ... at least when it comes to giving money to the homeless.

Diddy: Click to watch
We got the bad boy for life leaving club Quo in New York Sunday night -- where after buying roses for all the ladies in his entourage, he forked over a hundy to another guy looking for a handout.

The beggar didn't even look at the bill -- but we're guessing he was pretty psyched when he finally did.