A slang-like term for a person who is in the furry fandom. A person who is a fan of anthropomorphic, or cartoon like animals with human-like characteristics.
Also known as a raspberry, or in some circles, a "zerbert"...a fuzzbutt is the planting of one's lips on a body part of another...and blowing. Creating a "toot" like sound. Often done to babies' stomachs.
After an intense tickle fight, the momma bear fuzzbutted her cubs stomach.
When a man or woman finds enjoyment in sticking bottles of carbonated liquid into their anus, and douching their pooper then pushing out the soda so hard it makes their butt fizzy.
Man, that was an awesome fizzbutt, there were bubbles everywhere.
I sprayed my fizzbutt all over her face last night.