poof, v.² — Green’s Dictionary of Slang

poof v.²

[? to vanish in a ‘puff of smoke’]

(US campus) to leave.

1990		Eble Campus Sl. Nov.
1996		Eble Sl. and Sociability 51: These are a few of the many ways that a college student can say ‘leave’: blow, blow this popsicle stand, bolt, book, dust, get the heck out of Dodge, jet, motivate, poof and split.
2001		(con. 1964–8) J. Ellroy Cold Six Thousand 148: Splitsville — poof and adieu.