Wsp

Gamers use wsp to stand for "whisper." A whisper is a private in-game message, akin to a PM or DM. Players use whispers to discuss subjects they'd rather not discuss in a public chat.

For example, in an MMORPG, another player may ask you to wsp them so you can have a private discussion about where your party should travel next. Or, in a shooter or MOBA, a teammate may ask you to wsp them so you can discuss how to compensate for another teammate's shortcomings.

Your friends may use wsp to ask you "what's up." You're most likely to receive this inquisitive abbreviation in text or chat messages, when a friend wants to know what and/or how you're doing.

If you're not doing and/or feeling much ATM, you can reply to wsp with NM. Otherwise, you can explain what you're up to. You should then ask your friend wsp with them, just to be polite.