Fucking Zubat. They're everywhere, and you can never escape...
Go, my level 80 Empoleon! Oh, it's a level 14 zubat. Waste of PP, run
Can't escape.
Zubat used supersonic.
OK... try to run again?
Can't escape.
OK then, attack!
Empoleon hurt itself in its confusion.
This continues through the cave, until your hardcore team is near-beaten by the cannon-fodder pokemon.
Naturally, Gary "Motherfucking" Oak appears afterwards, purely for excessive dramatic reasons.
So glad Black and White don't feature a single zubat thus far