How were the Glukkons and Vykkers able to clap at the Gabbiar Auction?
Glukkons walk on their hands while their vesigal legs have never been seen to be operable. Vykkers have no palms with which to clap. All the same, Alf suggests that they are all capable of clapping (Vykkers with ferocity and two pairs of hands), and speculates that Vykkers have also invented clapping amplifiers to make themselves seem better at it than they really are.
