Steven Spielberg Holy Crap! Is that Spielberg Hittin' a Pipe on 4/20?!!?!

4/22/2014 12:40 AM PDT

 So riddle us this ... if it looks like Steven Spielberg, tokes like Steven Spielberg, and claims to BE Steven Spielberg puffin' away at the Cannabis Cup on 4/20 ... is it Steven Spielberg?

The annual celebration took place in Colorado and the guy who shot the video says Stoneyberg told everyone he WAS the famous director -- so potheads were hooking him up with free dabs.

And then there's this tidbit ... Spielberg's wife Kate Capshaw was at Coachella.

Sadly ... no midlife here.  A rep tells us it's not S.S.

Bummer, dude.