Ladies and gentlemen, give it up for the comedic stylings ... of Rob Gronkowski! The New England Patriots tight end -- who's dabbled in comedy before -- is launching his own comedy special called, "Unsportsmanlike Comedy with Rob Gronkowski" ... which debuts Friday on Showtime. Gronk will do some…

Dwayne Johnson would be nearly unrecognizable, if you met him back in his college days -- because he was more like 'The Wallflower' than "The Rock" ... according to his old teammate Finesse Mitchell. The SNL alum -- who, yes, played football at Da U with Dwayne -- says DJ was overshadowed by much…