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"lighthearted" and has logo/mascot brandishing a knife not in a friendly way.

I believe it's based on the "mess with crabo, get a stabo" meme.

And let's not pretend that it is anything other than a lighthearted joke.

Ah yes, the lighthearted kind of stabbing, as opposed to the kind that kills people.

Don’t worry, the cartoon crab isn’t going to stab any of his cartoon friends and start real world violence