What is "chugalugging"

Usage examples of "chugalugging".

The bar was crowded with humans and exotics, and Marc and Anne were squeezed in between a tall Gi daintily sip­ping a cocktail of frangipani nectar and a stout little Pol­troyan chugalugging a stein of creme de menthe.

Wacky warmed up by chugalugging a half pint of bourbon, while I did deep knee bends and jumping jacks.