See: BET ONE'S BOOTS or BET ONE'S BOTTOM DOLLAR, FROM THE BOTTOM OF ONE'S HEART, FROM -- TO --, GET TO THE BOTTOM OF, HIT BOTTOM or TOUCH BOTTOM, ROCK BOTTOM, SCRAPE THE BOTTOM OF THE BARREL.
BOTTOM
Meaning of BOTTOM in English
Slang English vocab. Английский сленговый словарь. 2012