Post the most rage - inducing set you can think of. Doesn't need to be OU-legal - AG/Uber/Battle Spot -based sets more than welcome. I'll start:

Dewgong @ Leftovers
[Timid] EVs 252 HP / 4 Def / 252 Spd
-Horn Drill
-Rest
-Sleep Talk
-Sheer Cold

Lapras and Walrein versions, defensive and sp. defensive builds included. FUCK these guys.