Vutch is a rootster's scrotum, however it is commonly used as replacement for bitch when used derogativley, mainly due to its similar spelling. It's origin lies probably with some old african language that was brought over with the slaves back in the 1800s, and was and still is very rarely used/known.

Accidentally misspelling the word "bitch"

your grab your penis as a women has her fingers in her vagina as you both grasp each other’s arms an work the arm back an forth leading to an orgasm