This page lists Quotes by Wes. When something is examined by Wes, he will only do some pantomime moves, providing no real information whatsoever. The player can alt-click items and objects to examine them.
Wes will still say "I can't do that" if it is an impossible action.
Wes doesn't have absolute actions, meaning they were not certain movements on a specific mob or item. Quotes are randomized when he examines an item or a mob, therefore there aren't exact movements he does which makes information even more confusing.