When the vibe/mood/aura of a room/place seems uneasy and out of the ordinary, the air is heavy and something feels wrong. It commonly foreshadows that something terrible is about to happen.
The term was heavily popularized in 2017 when the game DDLC (Doki Doki Literature Club) was released, and one of the characters (Yuri) uses it.
Referring to a person by a name they made up instead of their real birth name, especially when referring to them by this new name is meant to give legitimacy to the idea that the person is no longer who/what they actually are. For example, if a person is male but wants others to think of him as a female, he might change his name to Caitlyn, and demand to be called Caitlyn, demonizing anyone who calls him by his actual name. He wants you to stagename him. If you do not, he will say that you are "deadnaming" him, a term used to manipulate people into feeling guilty for being honest.
Bruce said "Hey, stop calling me Bruce! Call me Caitlyn, to show that you fully agree with the idea that I'm a woman. Do it or else you are not a good friend. Just accept me as being anything I claim to be!"
His honest friend said "But that would be stagenaming you, and it would make it seem like I agree that you are a woman. You are not a woman, so forcing me to call you by your stage name is forcing me to lie. Forcing me to lie is not something a good friend would do. Just accept me as being honest!"
when you tell your mother that you and you and your friends are at the beach gazing at the stars when in fact, you are all making out with eachother. This usually only happens on birthdays. Cause thats the rule.
To sneak away from a group (usually at night), to commence a crazy make-out session. 'Stargazing' usually occurs with another individual, though solo macking sessions have been known to occur. These individual stargazing excursions are generally discouraged and seen as anti-social.
Mary: "Chrissy where did you go last night, we were waiting for you."
Chrissy: "Oh, I was stargazing"
Mary: "...with B-Shay?"
Chrissy: "No, by myself"
Mary: "...Oh..."