Sloths have low metabolisms, so they have to move slowly in order to conserve energy. However, they aren't aimless or "lazy" and they actually move around quite a lot - just very, very slowly.
The Irish people didn't get on that well with each other either. They hated the Catholics, was the main issue, as I see. You can't blame them for that. If I understand correctly, Catholics do not believe in contraception. So, you know, sex is not relaxing.