Pit M is a short form of 'Present in the Moment'.
It means to be fully alive in the moment both inwards (focusing on your feeling) and outwards (by using 5 senses).
Tom: Hey bro, this pandemic has caused me so much stress. Don't know what to do.
Harry: Pit M, bro. It gives me contentment.
Used is a noun and verb. This is a move performed at an alternative concert varying from hardcore to even pop punk. To make the "swimming in a pit move" you get on the ground in a mosh or regular pit at a concert and pretend to swim (stationary) by waving your arms and kicking your legs. This move is more for laughs than breakdowns.
Girl: "Dude, did you see that guy get on the ground and swim in the mosh pit?"
Guy: "You mean, swimming in a pit. Yeah that is the future hardcore dancing."
The fat in a woman's armpit when her arms are down.
Did you see Tamatha's pit clit when she was wearing that tank top?
A pit pig is someone who finds the smell of armpits to be arousing.
The pit pig enjoyed the sweet aroma that emanated from their partner’s armpit as they released a sigh of desire.
A man with an armpit fetish who enjoys sniffing and/or licking other men’s armpits because the masculine musk and tangy sweat turns him on.
A: “At first the armpit thing was a joke, but I think I might really be a Pit Pig. I want to taste that man’s sweat.”
B: “Eugh, you actually like sticking your nose in a guy’s pit and smelling that man musk?”
A: “Only when he’s hairy.”