Top definition
-noun: An overweight person who disappears for an extended period, then reemerges only to show off their slender new figure.
Most fat-a-pillars will never admit what they do with all that excess skin.

The average fat-a-pillar regains most or all of the weight within a year of losing it.

Fat-a-pillars tend to be nicer than girls who were born skinny.
by f'd January 01, 2011
Get the mug
Get a Fat-a-pillar mug for your daughter-in-law Helena.