Cheap Laughter, its when someone tells a bad joke or an overdone joke do get a few laughs. Like McDonalds, anything with Mc infront of it makes it bad and cheap…McLolz can be used in context of a joke being told, or just if you feel like spicing up the LoL factor.
Man: Is that a bear?
Other Man: No! Thats my mom!
McLolz: define #2
A feeling of hilarity or entertainment from a tramp like person
maller.hobo.net, laughing at antyhing will express his happiness with mclolz