When a situation is beginning to become awkward. You know that it is about to be a merp situation however to avoid saying merp in the near future you warn the person you're talking to by saying "merl alert" which insists that they are about to say something merp worthy...
Verb. When frustration boils over into an explosive, unhinged rage fit, often with flailing, yelling, or dramatic storming off. Coined in family lore for those moments when logic checks out and pure chaos moves in.
Example: "The WiFi crapped out mid-stream, and I straight-up merped out—threw my controller like it owed me money."
Alternative: "Don't merp out over spilled coffee; it's just Tuesday."