Definition of "flatfooted"
adjective
comparative more flatfooted, superlative most flatfooted
adverb
comparative more flatfooted, superlative most flatfooted
(of drinking) Without pausing between swallows.
Quotations
Proficient drinkers could spill out an ounce, or an ounce and a half, or two, from the neck of a Solo Soda bottle in the dark, measured to the very dram, refill it with corn whisky, turn it upside down with the thumb placed carefully over the bottle's lip— for a good mix, and luck— and drink it down, flatfooted.
1952, William T. Campbell, Big Beverage, page 269