It's my perogative to freakin' do it. If you don't like it, I'm gonna have to damn well hurt you.
Actually, I've read that it is in fact not incorrect (double negative?

) to sometimes split infinitives. (Heheh.

) The rule is supposedly based upon Latin grammar. Fortunately for us, English is not Latin.
The other one I hate is the indiscriminate use of "I". It annoys me to no end to hear "He gave the tickets to Lily and I"... Arrgghghghgh!