what's the collective noun for several collective nouns?
- dunno

And if guide dogs lead the blind, how do the guide dogs know where to go?
- guide dogs are equipped with incredible senses of smell & as such, always know where to go....because the owner secretes these pheremones whenever he wants to get anywhere & the dog just knows.

Why for do you kick my dog and call him fuckoff?
- Covered this, your dog ran into my foot......

why does eating breakfast make you hungrier at lunchtime?
- 'cos mars bars can't drive tractors backwards.

Ah, increasing the knowledge in the world is a fine career :)