Breakfast for the lazy and/or time-crunched; consists of an Eggo waffle smeared with Jif peanut butter, eaten quickly over the sink and washed down with milk directly from the carton. Pathetic, yet satisfying.
"Dude, did you get to eat breakfast this morning? You look tired."
"Yeah, man, I slammed a Jiffle before I got here."
When a young woman places a jar of JIF peanut butter on top of her head you may place one erect weiner directly into the creamy compound, and then place your freshly covered peanut butter cock between two slices of wheat bread and make her eat it as she would a thanksgiving dinner.
My girlfriend gave me jiffle last night, to be honest it ain't bad.