To be in a very happy/random state, often being extremely spontaneous, and laughing at almost anything. Usually arises from extreme tiredness or light-headedness.
John was laughing for an hour today because someone said 'turtle!' He's being really wiffly.
by Andor Gillian June 21, 2011
Get the Wiffly mug.
Rhymes with "sniffly".
I'm all congested and my nose is sniffly-wiffly.
by Heartichokes May 11, 2008
Get the Wiffly mug.
Acronym for "when I fucking feel like it." Useful as a catch-all answer for when you're going to get something done.
Boss: When are those floors gonna get swept?
Employee: Wiffli.

A: When are we going to the store tomorrow, anyway?
B: Probably wiffli and not before.

I'll get to it wiffli, man. Don't get all bent out of shape.
by Talmanes October 29, 2007
Get the wiffli mug.
An acronymn for the term "When I Flipping Feel Like It".
I divide incoming work into 3 buckets: Required, Optional, and WIFFLI.
by dilbertisking July 9, 2013
Get the WIFFLI mug.