It seems to be Verbing Day; maybe it has to do with the vernal equinox, which was yesterday. Earlier: to glowstick. And now: to Birkenstock, in a 3/23 New Yorker piece by Rebecca Mead, “Sole Cycle: The homely Birkenstock gets a fashion makeover”, about sandals. Shearling-lined Birkenstocks:
From p. 48 of the piece:
[David Kahan, who runs Birkenstock’s American division] explained that the boots and shoes arriving in stores this fall would still be recognizable as Birkenstocks but would capitalize on other trends in the marketplace. “I use ‘Birkenstock’ as a verb,” he said. “We did a sneaker bottom for spring — sneakers are a hot trend in the market, so we Birkenstocked it. We Birkenstocked Doc Martens; we Birkenstocked a motorcycle boot.” There was even a Birkenstocked Ugg: a fur-lined bootie with a ridged sneaker bottom and two sandal-like leather straps across the foot.