Future finally reacts to Ciara's slander lawsuit, calls it a joke

Ciara must be very bitter over this break up for her to go as far as suing her child's father for defamation. Reacting for the first time, Future called the $15million slander lawsuit a joke, saying Ciara made money off bad-mouthing him. TMZ reports below...

Sources close to Future tell TMZ, the rapper thinks it's absurd his baby mama filed the slander suit, since she's talked plenty of trash on him. We're told he believes Exhibit A is her 2015 platinum selling hit, "I Bet."

With lyrics like ... "You know that it hurts your pride but you thought the grass was greener on the other side. I bet you start loving me as soon as I start loving someone else. Somebody better than you” -- the song is widely believed to be about Future allegedly cheating on Ciara.

Our source says he could've sued over that, but didn't want to be petty. As for whether he fires back with a lawsuit now -- we're told he's considering it, but hasn't seen Ciara's docs yet. His team claims the process server at LAX failed to deliver.

Bottom line: it's a safe bet this is gonna get much uglier.