Wolfgang does not really do handshakes. Or hugs. Or any other physical contact. They've never realised this before now, when they're being presented with someone else's hand. Typically when people do this for a handshake, out of habit Wolfgang pretends they don't notice or makes an excuse, but now, well.
Gingerly they put their hand in his. Wolfgang is very tall, it's no surprise they've got big hands as well, but for someone who works with them for a living they're surprisingly soft, save some calluses on the tips. “Should I, um...” What, put an arm around him, is this like a Tarzan and Jane thing? Should they do like a piggyback or what? They gesture a bit vaguely.