* Guns: This is a very common slang term for biceps.
* Lats: Short for latissimus dorsi, the large muscles in the back.
* Pecs: Short for pectoralis major, the muscles in the chest.
* Abs: Short for abdominal muscles.
* Quadriceps: The large muscles in the front of the thigh.
* Hamstrings: The muscles in the back of the thigh.
* Calves: The muscles in the lower leg.
* Traps: Short for trapezius, the muscles in the upper back and shoulders.
You might also hear people use more general terms like "meat" or "gains" to refer to muscles.
It's important to note that the slang used can vary depending on the region and the context.