1. My B.A. is in Pure Mathematics
2. I lost my virginity at fourteen (It's alright, I wasn't using it for anything.)
3. I sang a sickeningly romantic duet with Lucy Liu's cousin.
Hmmmmmm....I bet that the lie is #1, and that your maths degree is in a different sort.
1. I have had sexual action in an airport.
2. I have evaded police pursuit in a ford club wagon.
3. I was stillborn.
Well, my twin kellichou was born blue and breech, but the doctors were able to revive her fully. However, a true stillbirth means that the baby is 100% dead. So I vote that #3 is a lie.
1. My house has more computers than TVs
2. My Dad blew himself up in a gasoline explosion
3. I'm allergic to dogs and can only own poodles because they are hypoallergenic.
Jaydub, it seems that you own a different sort of dog, but I can't be sure. You do seem like the sort of chap that would have more computers than TVs, so I think #1 is true.
However, I think that your Dad is still alive based on some of the posts you've made about him washing away hillsides after his 'tate surgery. So I think that #2 is the lie.