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1.
A term used to describe misspoken phrases that are often derived unexpectedly and are surprising sources of comedy; the cause of hilarity usually stems from misspoken pop culture references which are spoken with conviction and rigor by the guilty party.
Examples of an Alism:

#1:
Me: "No more drinking, all I do is P90X."
Al: "Its PX90 dogg... Retard!"

#2:
Me: "So where do you want to go eat?"
Al: "Lets go to el lollo poco!"
by thebigred August 24, 2010
 
2.
The Idea that Al is the coolest person on earth, which makes you want to eat a bologna sandwich and chill on your phat ride.
"Dammmn thats an Al over derrr"
by CoolioStraightz March 26, 2005