UFC's Nate Diaz: Can't We All Just Get a Bong? (Answer: Yes)

To the victor ... goes the bong -- at least if you're Nate Diaz.

The UFC superstar is showing off the custom new smoking piece he got after dismantling Conor McGregor ... a custom beaker tube-style bong from Illadelph Glass.

Nate was so excited about it, he posted a pic on Instagram thanking everyone responsible for hooking him up with the bong.

BTW, these things ain't cheap -- Illadelph bongs usually sell for hundreds of dollars.

His UFC superstar brother, Nick, who's currently suspended for testing positive for weed, also got one.