Quick answer: crash out (Anger-related slang / ambiguous) — To lose control in anger or act recklessly with serious consequences; separately, to fall asleep from exhaustion, fail or be eliminated. Meanwhile, delulu (Playful · can be dismissive) — An exaggerated, informal version of “delusional”: unrealistically hopeful, imagining a connection, or choosing confidence over the available evidence.
1. crash out ↗
Category: Internet essentials
Register: Anger-related slang / ambiguous
Regions: Online
To lose control in anger or act recklessly with serious consequences; separately, to fall asleep from exhaustion, fail or be eliminated.
When it fits: Use the meaning that fits the actual event. If somebody seems genuinely distressed, address the situation instead of treating the slang as a diagnosis.
When to avoid: Avoid assuming that a sleep reference describes aggression, or treating a joking complaint as evidence that somebody actually acted violently.
“He nearly crashed out over a missing charger.”
In plain English: He nearly lost control of his anger over a missing charger.
2. delulu ↗
Category: Internet essentials
Register: Playful · can be dismissive
Regions: Online
An exaggerated, informal version of “delusional”: unrealistically hopeful, imagining a connection, or choosing confidence over the available evidence.
When it fits: Use it about your own obviously exaggerated hope or in a group where the teasing is welcome. Acknowledge the gap between wish and evidence.
When to avoid: Do not use it to diagnose someone or brush aside a genuine concern. Calling someone delulu can shut down a conversation rather than explain your disagreement.
“The band liked one of my posts, so naturally we are best friends now. Delulu.”
In plain English: I know I am imagining far too much from a small interaction.
Test both expressions in context
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