"Hold on, my dock is nearly up" "Hold on, my ** is nearly up"
Censorship can actually make things MORE offensive. (other censored words include "but" and "come")
Still, all in all, automatically replacing a (supposed) swear/offensive word with some asterisks makes less overall damage than banning someone's account (temporarily or for longer periods or forever).
It is simply intimidating when you have to think twice or thrice before saying something for fear of being automatically banned (without possibility of explanation/recourse).