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.
We're guessing they're decorative only ... right?