When you and stalk someone and they stalk you at the same time. It is a mutual understanding that you both are doing this and can be done with or without acknowledgement
Friend: How do you know that person and why are you stalking them
Me: It is zebra, I have never had a conversation with them but we are mutually stalking each other
(pronounced MUTE-tual) when you’re mutuals with somebody on twitter but barely interact anymore and their tweets stopped being relevant to what they were, but you don’t want to block or unfollow so you decide to just mute them.
“hey, you know X too? I see you’re mutuals”
“we used to. now he’s just a muteual”