Actually, it's an irregular verb patterned after volo. I know, because my Latin I students conjugated it:

yolo, yelle, yolui

present:
yolo
yiss*
yult
yolimus
yultis
yolunt

imperfect: yolebam, etc.
future: yolam, etc.
perfect: yolui, etc.
pluperf.: yolueram, etc.
fut. perf.: yoluero, etc.

* Variable personal ending of enthusiasm. E.g.: Eheu, yissssss