Clinton Portis showed us his tattoos at Knock Out Abuse. (Davide De Pas )

And for the past five or six years, he’s also been a happy outlier at Knock Out Abuse — one of the few men in regular attendance at the raucous girls-night-out gala. At the end of Thursday’s party, the running back — who was released by the Redskins in February — asked for a moment to speak.

“I love D.C.,” Portis said, “and I never really had a proper goodbye.”(Shhhussshh, ladies! We want to hear this!) He said he knew it was a business decision for the Redskins, no hard feelings. “Still my favorite team.” Portis said he hopes to play football somewhere else eventually, but “even if I do, a part of my heart is in this city.”

Aww, Clinton! That’s so sweet! Minutes earlier, of course, a naughtier Portis had been on display, as he took his clothes off (well, most of them) to encourage live-auction bidding on a dinner with CP himself at Café Milano. (Readers, it went for $6,000; part of the $541K raised overall for domestic violence prevention. Across town, at the men-only Fight Night, founder Joe Robert donated $5 million to children’s charities.) Later, we fought our way through a crowd of evening-gowned hotties swarming the gridiron hero to ask (dumb question?) what drew him to this party. “It’s a great event, and a good cause,” he said. “I’d come back every year.”

Read earlier: Fight Night, Knock Out Abuse 2010: His-and-her fundraising, 11/15/10 (“. . . Clinton Portis, casting bedroom eyes around the room as he cuddled a puppy that soon got auctioned off for $6,000. The Redskins player then auctioned a dinner with himself for $6,700, seductive patter doled out free of charge. To the woman who won him: “I don’t have a ride home, by the way.”)