Lil Wayne -- I'M IN TONY HAWK VIDEO GAME ... With Magical Crotch Powers

Lil Wayne just got the ultimate compliment as a skater -- he's now a playable character in the new Tony Hawk Pro Skater 5 video game ... and he's PUMPED about it!  In fact, Weezy sat down with Tony and Conan O'Brien to take the new game for a…