$1 Flip Flop Day

flip flop
An abrupt reversal of policy
reversal: a decision to reverse an earlier decision
A backward handspring
a backless sandal held to the foot by a thong between the big toe and the second toe
A light sandal, typically of plastic or rubber, with a thong between the big and second toe
interchange: reverse (a direction, attitude, or course of action)

day
time for Earth to make a complete rotation on its axis; "two days later they left"; "they put on two performances every day"; "there are 30,000 passengers per day"
Carried out during the day as opposed to the evening or at night
some point or period in time; "it should arrive any day now"; "after that day she never trusted him again"; "those were the days"; "these days it is not unusual"
(of a person) Working during the day as opposed to at night
a day assigned to a particular purpose or observance; "Mother's Day"