Don't put him out to pasture just yet ... UFC stud Urijah Faber says he's not 100% sure his next fight is his last -- telling TMZ Sports he's consider coming back if someone really pissed him off.
The California Kid is slated to take on Brad Pickett at UFC Fight Night in December -- and had said it would be his last fight ever ... culminating a solid 13 year career.
But when we pressed ... Faber told us he's definitely not slamming the door on the possibility of getting in the octogon again.