Langston Galloway

Detroit Pistons guard Langston Galloway is goin' prehistoric with his sneaks on Saturday ... copping a sick pair of Fred Flintstone shoes for his big playoff game!! TMZ Sports has learned -- the 5-year vet wanted to do something extra special with his Q4 EM-55 kicks for Game 3 of the first round…

Pay attention, NBA dads -- Pistons guard Langston Galloway just set the big baller standard for gender reveals ... and teammate Andre Drummond's got the hilarious play-by-play. It all went down at Little Caesar's Arena Tuesday night after the Pistons smashed the Pacers ... when Langston rocked the…