You're Only Hurting Yourself
I suppose one could be successfully prosecuted, but really the chances of being charged are quite remote.
IMHO, the greater deterrent is the self-knowledge that this is an entry that is at best suspect (to be very charitable), and more likely fraudulent. As such, it debases or taints your entire logbook, which can no longer be considered an accurate record.
Just don't do it! When it comes to logging time, always err on the side of conservatism.