Usually weight training, but also any other strenuous activity.
Just been blazing out some hivy hivy weights.
The excess sperm that does not hit the target after an aimed cumshot and lands on the floor, or anything else
Are you going to clean that dukkah up?
The area of skin between your scrot and your anus, otherwise known as the bifkin, taint or perineum.
If 'tweren't there your guts would fall out.