I do know a former co-worker that regrets his. He has a nude woman waving the Confederate flag on his forearm.
He got a lot of complaints about it in the summer when he work short sleeves and we had to look at the tattoo's boobs everyday
He started to regret it when it cost him a promotion
I kinda sorta regret the first tattoo that I got. Its the Japaneese symbol for "woman". Its just a little tiny thing but its boring now and I'd like to cover it with like a butterfly or something. My other one is a beautiful unicorn on my ankle and I love it.