Banging my pants, also known as bmp is popular internet slang used in the 1960s. It's commonly replaced with lmao, lmfao, rofl and lol. This term was popularised on social media like 4chan, reddit, tumblr and facebook.
The first recorded time of bmp was when Lebron James said "I'm bmp'ing right now!" after lebron james' teammate made the infamous joke "What do you call a basketball that never misses. IT'S NOT A bASkEtBaLl!"
"What do you call friends who love math? ALGEBROS!" JOKE is so good, bmp!!!
by BMPnotLOL March 15, 2021
An image file format supported by many programs, including Microsoft Paint. BMP (which comes from the word "bitmap"), is intended for offline use, since BMPs tend to be large in size.
BMPs are not for the web!
by GastonRabbit June 24, 2004
Used instead of lmao, rofl, pmp, lol, or lmfao. Popular internet slang, often used in casual conversations.
Person "says something funny" other person "bmp"
by Bablab March 14, 2021
Stands for brushing my pants. Similar to smh in use but for intellectuals.
"hey man I forgot my wallet at the house"
"Bmp you're an idiot"
by Pantsbrusher April 8, 2019
Beta Male Provider. These are the guys who buy women all their drinks, shower them with compliments, drive them around, and are baffled when the females aren't sexually attracted to them. On the other hand, alpha males take care of the female's sexual needs.
Janet's BMP, Joe, keeps giving her flowers, taking her to movies, and is always telling her how intelligent and interesting she is to gain her approval. What Joe doesn't know is she really loves Jake, the bad boy jerk who fulfills all her sexual desires.
by b00zy July 2, 2006
Black Man's Pussy.

Often tattooed on white girls who belong to black men.
That young white girl was a virgin when I met her. I took her from her home an me and my boys own her now. She even has "BMP" tattooed around her belly.
by Mandingo10+ June 26, 2009
Many will beleive that it is something Microsoft use to force PDF files into their folder, but no.
It means Big Man's Penis - do not associate with Wade from GTA 5, as he states at his cousin's house (When Trevor overhears them talking about him) he hasn't a very large penis.
"How's your BMP?"
"Ok, how's yours?"
"A bit slow. Too many files for the folders."
"Hmm. Mine has had a lot of action too recently."
"Really? What type of file?"
"The one on yo mamma!"
by Jacksepticbosses August 18, 2014