My best Taco Bell memories are when one opened right down the block from my house, probably when we were in 6th-7th grade. My friends and I used to ride our bikes there and eat lunch on our limited allowances from our parents. And my friend would always say "there was a hair in my taco" after he finished eating one, to get a second one free (because we didn't have enough $$ anyways)... I think they finally caught on when he did that twice in one day.
I can't remember the last time I've actually been to TB though, for fast food Mexican I'll go to Green Cactus.