If you can't get out of it you can constantly make references to CSI miami- like, "Uh, well in CSI they would have found DNA evidence to prove that the crime was comitted by a cross-dressing man wearing make up, so I really can't understand why they didn't find any in this case. Like, if this was CSI I'd demand that you re-run all the samples again".
Then they'll through you out in no time.