Having the boys that date your daughter think you're a little nuts is a good thing.

All my daughter's male friends already know about "the shovel".

I plan to have the shovel propped up in the corner of the living room when one comes by to pick her up for a date ... and oh yes he will come in because the first time one pulls up and honks the word will go out "don't pull up in the driveway and blow the horn, her dad's coming out and he ain't pretty".