Cowboys loved a colorful phrase! This meant a delicate situation. The image is finding a hair in your butter but wanting to be polite about it.
Butter Bar
If you mean slang as in internet slang, then it means "Certified Old Fart".
According to the Skippy Peanut Butter website a 40 oz. jar of peanut butter is equal to 4 3/8 cups. A slang term for peanut butter during World War II was monkey butter.
Slang is slang It's the s' "LANG " uage.
In old slang, milkshake mean butt.
Dough is a slang word for money.
he means what does being a sponge mean in slang
It is slang for having sex.
Cool itself, unless you are using it to mean mildly cold, is a slang word. Just because it is old slang doesn't mean that it is not still slang.
Guns to butter i think you mean. google it.
BTM is a slang acronym for "Be There Moment."