Numb lip

I woke up this morning to a numb lower lip. This isn't the first time it's happened... actually it's happened 3 or 4 other times in the past few years. You know how they say everyone eats on average 2-3 spiders a year while sleeping. Well... the spiders that enter my mouth at night rebel on the way in and always seem to bit my lip. I even woke up one time with a dead spider inbetween my teeth. Grosses you out right?! Well... how do you think I feel! I think this one actually bit closer to my gums - they're numb too.
Why do you think that is? Is my gaping hole more attractive than J's at night? You don't see her with a dead spider in her teeth! I donno. Maybe I need to wear a mask at night and let the spiders get her instead. :)