Well in DM games there's always painting walls all around your opponents build area. It's generally looked down upon as bad behavior.
In RM I have to say the slinger rush is one of the most annoying tactics, considering how it is mostly just a nuisance to the victim unless it's pulled off perfectly, and otherwise almost more crippling to the rushers own economy.
//The warrior of Isola
"I lack quotes that demonstrate Humor Intelligence or anything about me."
Pineapplefish
Cleidopus gloriamaris