A person who is sexually excited by the scent of a woman who has not washed in some time. Fishermen often signal their preference by showing themselves holding a caught fish in an image on their dating app pages.
"He's holding a fish in his tinder profile, you know what that means? Wear last week's panties, he's a fisherman"
The promptly tied, mess avoiding, knot made at the open end of a sperm filled condom. The knot is tied quickly upon withdrawal and unsheathing the penis to avoid any leakage of errant cum.
After nutting up full the reservoir end of his lambskin sheath, Dan quickly pulled out and secured his load with a Fisherman's Knot.