Cuba Gooding, Jr. On Topless Hockey Celebration ... That's How I Get Down!

Screw Ebola, Cuba Gooding Jr. has clearly been infected with another troubling ailment ... BIEBER-ITUS ... 'cause the Oscar winner can't seem to keep his shirt on these days.

Cuba was leaving Cafe Habana in Malibu Tuesday when we asked about his recent topless hockey celebration -- when he ripped off his top moments after scoring a mid-ice shot during an NHL shooting challenge.

Cuba's explanation? THAT'S HOW HE DO!!!

... and then he ripped off his shirt again.

Bieber-itus ... it's spreading.