"U mirin' killawasps, brah?"
Not really a speeding excuse, but still worth a mention...
Couple weekends ago a few of us decided to go for a nice cruise through some backroads. Was a warm, clear, sunny day, so the last thing we expected was thick ice all the way down a hill after a blind corner. Long story short it ended in a loss of traction, an insurance claim and therefore police being called to attend. So here we are, expecting some middle aged bloke to show up on a mission, and see 3 young guys with 3 separate cars and assume we were being d!ckheads (we weren't). Eventually the cop, probably late 20's, pulls up in his police issue XT Falcon, and the first words out of his mouth - "holy sh*t, I had her sideways coming down there!"