The act of unleashing uncontrollable bursts of laughter privately, (or publicly) to the point of hysteria or hyperventilation. A laugh is unique and entrusted to everyone, but a roister roll is for the gifted few blessed with overachieving glee!
Oh man....while eating at the cafe the other day, Brittany unleashed her roister roll.

Haha...was everyone in the place staring at you?

Are you kidding, of course, it had it's own echo.
by lennonutt March 12, 2011
Get the Roister Roll mug.
a foolish braggart

true origin is a comedy by Nicholas Udall called "Ralph Roister Doister" written a.1553
Roister Doister is my name,
A lusty brute I am the same
by pooglem July 27, 2007
Get the roister doister mug.
bit of a "player"; generally with women but can also be used in business. Origins - Only Fools and Horses.
"Rodders, I'd never of guessed, you ol' roister doister."
by adrian daniels March 17, 2005
Get the roister doister mug.