Wyd is the laziest text in existence, but it is still an opening. Answer with nothing much and the thread flatlines. The trick is to treat it as an invitation to be interesting.
Give a slightly exaggerated answer, tease them about the lazy opener, or flip it into plans. All three beat nm u.
Nothing much, just chilling adds zero energy. Even a tiny exaggeration about your evening gives them something to react to.
Calling out wyd playfully shows confidence and instantly raises the energy. Keep it warm, not mean.
A wyd at the right hour is often a soft invitation. If you like them, turn it into actual plans.
Literally what are you doing, but it usually means I am bored and thinking of you. Treat it as low-effort interest you can upgrade.
Often, especially in the evening. It is a low-risk way to start contact. Your reply decides whether it goes anywhere.
A playful, slightly exaggerated answer plus a question back, or a confident flip into plans if you want to see them.