To amble without real aim, yet in a friendly and harmless manner. It's not required to acheive nothing, though it is a frequent side effect. Bimbling can be made a little more business like with a slight hunch of the shoulders.
You already know what this is...it's when you're trying to take a massive dump and the turd bomb reaches the sphincter only to release tiny little bomblets. They usually are responsible for that machine gun poop that splashes your ass. It feels like you're pooping Raisnettes.
a) Self-righteous, irksome, delusional person who is infused with religous vanity and is prone to annoy others with their judgmental attitude.
b) person who is convinced he/she is going to heaven, despite the fact that he/she sucks to no end.
c) poor selection for a lover or roommate.