Girls and Gremlins
Barry Stinson (aka, Neil Patrick Harris) in "How I met your mother" relates how to prevent girls from becoming girlfriends. In which the rules are the same as gremlins.
- Never get them wet
In other words, don't let her take a shower in your place.
- Keep them away from sunlight
Don't ever see them during the day.
- Never feed them after midnight
Meaning she doesn't sleep over and you don't have breakfast with her, ever.
All this time -- now I know what I've been doing wrong! ;)