Being the greatest of all time at something — the adjective form of GOAT.

A minor mental breakdown, described lightly.

Go outside — an instruction to someone who's been online too long.

Completely unaffected by criticism or drama — and making sure people can tell.

Scepticism or pointed doubt — rarely actual thinking.

Standing there awkwardly with nothing to say or do.

Overwhelmed, drunk, exhausted, or attracted — depending entirely on context.

Forced enthusiasm masking distress — smiling through it.

Stoic indifference — reacting to something with a completely blank expression.

Complete agreement, or a perfect score — "absolutely".

Unbothered confidence — indifference to what anyone else thinks.

A warning sign about a person's behaviour, usually in dating.

Calling someone — often yourself — a fool for a bad decision or misplaced hope.

Dissolving from embarrassment, overwhelm or heat.

Forced cheerfulness masking frustration, resignation or dread.

Overwhelmed by something touching — trying not to cry, usually happily.

Begging, sweetness, or exaggerated vulnerability — often deployed manipulatively as a joke.

That's a lie — the emoji form of calling "cap".

I'm watching this, and I have thoughts I'm not saying out loud.

Excellent, impressive — a complete compliment with no words needed.

Overwhelmed — usually with laughter, sometimes with genuine emotion.

Laughter — and, to younger users, a signal that the sender is over about thirty.

I'm dead — meaning something is extremely funny, not morbid.

A condescending form of address implying someone is naive or out of their depth.