Ok, here is mine.
For as far back as I can remember, I have awlays, ALWAYS wanted Rats, but my parents wouldn't hear of it.
Allmost 15 years ago (eeeewww), when I was 17 and moved out on my own, I finally decided I was getting some.
I drove to the ONLY petstore in my area that sold them, and got 2 beautiful Fuzzies that were housed in the same tank.
Being young, ignorant, and inexperienced (and not having any internet, or resources to know any better at the time besides what they told me at the Petstore), I was thinking they "won't breed" so young, and I would have them "fixed in a few weeks". They were about 10 weeks old at the time.
A week and a half later, I ended up with a littler of 9 gorgeous multi-colored babies. 5 Females, and 4 Males.
Even though I never planned on breeding, I was thrilled, and watched the babied grow like weeds.
At about 8 weeks of age (which I STILL thought was WAY too early for the girls to get pregnant, as they were less than 1/2 the size of their parents) they all went to their new homes.
I decided to re-home the mom, and kept one of the males as a companion to his father, and a Lady took all the girls (including the mom), and another the remaining 3 boys.
4 of the 6 girls were (SURPRISE) pregnant, and soon, she ended up with a total of 31 babies (on top of the 5 females she already have. She was overwhelmed, couldn't find homes for any of them, and ended up letting ALL the rats "loose" in a local Park (IDIOT!!!), which ended up on the News, and the rats were hunted down and killed without mercy.
My father and son duo were about 2 months apart, and lived to be a tad over 2 years of age, as they were, unfortunately, (per the Pet-Stores recomendation) being fed a "rodent-food seed-mix" that I was aquiring at the local pet-store. Thankfully, both passed peacefully in their sleep.
I haven't owned rats since, until now.
I love all my babies, but have done my research, and have only males now.
I LOVE all my boys.

(Although a few months ago, a pregnant female DID make her way to my house, but all the babies have found homes with RESPONSIBLE owners, who constantly stay in touch with me).