Just laid down in bed getting ready to sleep

When a distant relative called me
He said: his son hit someone while driving and the situation is pretty serious. I thought he was going to ask to borrow money.
But then he said, after all his son just graduated college and still needs to take the civil service exam, can't have a blemish on his record
He asked if I could take the fall for him? At worst I'd spend a few days in jail, and he'd be grateful to me for life.
I suggested he go through legal channels, and he said his son is colorblind, doesn't even have a driver's license yet, and on top of that had been drinking some alcohol.
I....