The term "ass load" can be found in the Old Testament of the Bible. God tells Noah to bring an ass's load of grain for each pair of animal brought upon the arc. Thus an ass load is derived from the amount of weight that can be held carried by a mature, healthy donkey (ass).
The term is used again in the New Testament when Jesus shares the parable of Rosie O'Donnell's booty, it is cursed to weigh over 7 ass loads because she is an annoying, fat, and ugly bitch.
When speaking of quantity: an amount more than which is easily countable
When speaking of size: larger than a man can easily carry
When speaking of time: an amount of time which is larger than the expected amount
When used as a noun: a wad of semen released by a man inside the anus of another person (male or female alike)
"I got an ass load of collectible cars in my attic."
"How big is my house? It's got an ass load of space!"
"Jon went to buy beer 3 hours ago. He's taking an ass load of time"
"I gave your sister an assload last night!"
By Cassaundra
Ass Load
Speaking in terms of time - anything requiring over 4 hours.
In regards to physical objects, more than could be easily carried by the average fat broad.
I have an assload of work to do this week.
I have an ass load of shingles.