swimming around inside somebody's mouth

A phrase used to define the weather in the southern United States. Typically hot and very humid.

Damn, it's so hot today in Tennessee its like swimming around inside somebody's mouth.

Swimming with Michael Phelps

Another way of saying dropping the kids off at the pool (aka taking a dump)

Sorry I didn't answer the phone, dude. I was busy Swimming with Michael Phelps.

Do one legged ducks swim in circles?

If someone asks if an answer is correct, and its clearly obvious to everyone it is, then the retort is "do one legged ducks swim in circles?"

"Is the sky blue?"
"Do one legged ducks swim in circles?"

You look like you can’t swim

It means you look like you can’t eat Coochie.

Her: *looks at boy* You look like you can’t swim...
Him: wym.
Her: Nvm🙄

Swimming in the kool-aid, but don't know the flavor.

Sometimes heard in military circles, the phrase denotes someone who is overly-involved but doesn't really know what is going involved.

Usually used to point out a micro-manager who misses the forest for the trees.

Upon seeing a clueless officer trying (and failing) to prepare a Rifle-Launched Grappling Hook for use (not his job), a soldier might state to another, "Man, the LT is Swimming in the kool-aid, but don't know the flavor."

Variations include "All up in my kool-aid, and don't know the mix", or the abbreviated "Swimming in it."

You look like you can’t swim

Tiktok trend where men get offended when you tell them “you look like you can’t swim” because they don’t like being told they can’t do something.

“You look like you can’t swim”
Why the fuck would you say that

That’s so fucking rude of course I can swim

Do one legged ducks swim in circles?

See Does a bear shit in the woods?

"She just bit my head off. She PMS-ing?"
"Do one legged ducks swim in circles?"