Heads I win, tails you lose humorous
Used to say that no matter what happens, I will win
He was so arrogant that he supposed it was a heads-I-win-tails-you lose case. At last, he had to beg for help from his father.
Flipping a coin is my forte. Heads I win, tails you lose.
The expression is used at the beginning of a competition to say that you hope the most fastest, strongest, or most skilled succeed person
wins.
To win only by a smaill amount; to win narrowly
A game in which all sides have potential to win
Win something easily, or with less or no effort
The phrase "heads I win (and) tails you lose" is first recorded in The Second Essay on the Catholick-religion: Viz. On Its Suppression and the Substitution of Heathenism, or Idolatry (London: Printed for John Worrall, 1728), by Guy Vane—as quoted in the Oxford English Dictionary (online edition, March 2021).
Used to advise that someone should wear warm or dry clothes, otherwise he or she will catch a very bad cold
"It's snowing outside, you'll catch your death of cold if you don't wear properly."