There is a branch of the Leon Guerrero clan called the familian Alimåsak.
The alimasåk is a species of crab. The story I heard says that one of the family ancestors had a little too much of the good stuff to drink, and was with others socializing on the beach. When he got up to walk, he didn't have much of a balance and started to sway to and fro as he walked. This reminded the others of the way the alimåsak walks sideways, and they laughed and started calling him alimåsak.