I don't know about you but i've never seen people clubbing seals. No one gets videos of people clubbing seals shoved in their face.
Not seals as such but I'd imagine it'd be probably worse than clubbing kittens for fun. But that's another topic.
A name indicates the mentality of the person, what they are, what they'd hope to be and/or what their values are. A light hearted name of seal clubbing (or kitten clubbing) for entertainment is an indication of the person.
Of course the question for this thread is does that run contrary to the game's policies? Of course given the dates of this thread, I'm sure this has been answered in one way of another & would serve as a useful guideline on what names are (or are not) appropriate.