The world's most unhip phrase must be eradicated with a 'nucular' bomb

“brother from another mother.”

The proof: The two former presidents have developed a close friendship, with

So is Hilary his sister from another mister?

Aw, give 'em that. I think it’s cute.

The OP’s post is the one and only encounter I’ve had with this phrase. Apparently it’s perfectly possible to live a normal USAian life without it. Perhaps the OP (person) travels in the wrong circles.

Bravo. Well-played.

The first and only time I’ve heard this phrase used is in There Will be Blood
when DDL’s character is talking to his long lost brother. Not knowing that it’s a current phrase, I thought it was funny yet somehow anachronistic (well, duh).
Shall I assume it falls under the same vernacular as “baby mama”?

I’m not sure if the phrase was used as such, but in Northern Exposure Chris Stevens, who was white, had a black “brother from another mother” (literally his half-brother), Bernard.

Well, I suppose it is better than saying ‘Bro from a ho’.

It is true that if George W. Bush uses it, it has no more hip than a garter snake.

Were George W. Bush to be all about the bass, I should indeed be for treble.

… cousin from some auntie lovin’,
… uncle from a grandad’s spunkle,
… niece from a sister’s piece?