1. Someone that always exhibits an attitude of fun and excitement in what he/she is doing. This person often is the life of the party and invited to events just because friends/acquaintances know they will have more fun if he/she is there.
2. Person lacking of standard excuses for not having fun or going out, such as: "i'm tired", "I have to get up early", "I have my kid tonight", "My spouse said i can't go out", "I drank too much last night"
Best man: NO! You had better change your funitude right now or no more dances for you!
Person 1: Man, last night was crazy.
Person 2: I know, Person 3 is the world record holder for "purveyor of funitude" (as measured on the official funitudity meter)