How to reply to sup in a funny way?

A single word with nothing around it tells you almost nothing about intent. It could be a girl who is bored at work and wants a distraction, a girl who opened six apps and sent this to whoever was on top, or someone who is interested and doesn't know how to start. Look at what came before it, if anything: did you match recently, did you talk before, or is this the first contact? Check her profile for a detail you could mention. The funniest reply is usually the one that picks up something she already put on the table, because it shows you read it and it hands her a topic she already cares about.

If there is nothing to grab onto, assume low effort on her side and keep your reply equally light. Matching her energy is not a weakness here. A heavy, thoughtful reply to a one-word message makes the exchange feel like homework for her.

Two kinds of reply tend to work. The first is the light callback: a short, slightly playful line that refers back to something tiny, like a word she used, a photo detail, or the time of day. Its job is to show you're paying attention without making a thing of it. You can tell a draft is this kind when it is under about ten words and asks nothing heavy. It should leave out any setup for a bit that needs two more messages to land.

The second is the open question with a hook: a low-stakes question that is easy to say yes or no to, or that has a fun answer. Its job is to hand her an easy next step. You can tell it works when she could answer it in one line and still feel like talking. It should leave out questions that feel like an interview, such as where she's from or what she does for work, at this stage. Both kinds should avoid apologising for the joke or explaining it afterwards.

Send the reply when you'd normally be texting anyway, not at 2am when it reads as either desperate or like you're filling time. If she replies, match her length and energy and keep it moving. If she doesn't reply after a day, don't send a second "sup" or a follow-up joke. One message back is normal, and a second one with nothing new is pressure. If there's still silence after a few days, let it go and move on. Treat a one-word opener as a low-cost conversation, not a commitment, and don't spend extra effort on someone who has given you almost nothing to go on.