He Did His Big One

Here's a breakdown of the phrase:

"He did": Indicates that the person took action or completed something.
"His big one": Refers to a noteworthy or outstanding accomplishment.
For example, if someone put together a fantastic presentation that wowed everyone, you might say, "He did his big one with that presentation." This means that the person did an excellent job and their effort was notably impressive.

In summary, "he did his big one" is a way of highlighting someone's remarkable achievement or success in a particular endeavor.

WOWWW he did his big one... - Leah Love Island USA

Big one isn’t it

You like men.

That means you like animals big one isn’t it

the big one

The ultimate adventure, World War Two, 1939-1945. The summit of history.

my granpappy done killed 22 SS Officers and 72 screamin' Japanese in the big one, and now this generation tries to out-do him in quantities of gender!

'The big one'

Filling a balloon with semen and using it to bludgeon a family member or friend.

Mum, Harry is using 'the big one' on me!