Something funny is upcoming due to a build-up of circumstantial events, or a comedy of errors.

Sometimes involves rape.
You: Fuck! I just shat my pants!
Rape Panda: *Waits for hilarity to ensue*
...
hilarity ensues
by burgernator August 3, 2009
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A stupid thing created by english teachers who read way too much.
Friend 1: UGH! This exam paper about Rude Hilarity is too hard!
Teacher: *starts laughing maniacally*
by IconicBaguette October 26, 2019
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Where, if you hate someone, nothing they say will be funny to you, no matter how funny it actually is. Additionally, when you like someone, every little thing they say is funny no matter how stupid it actually is.
James- Hey guys look! (makes unfunny face)
Hilary- Hahaha! James you're so funny!

Hank- Man Hilary must really have Conditional Hilarity Syndrome because that was the least funny thing anyone has ever done on planet earth.
by Sleet October 5, 2009
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The plural of hilarious; meaning more funny than hilarious.
Hope constantly cracks me up. She is absolutely hilar-e-i!
by LAVixen October 22, 2007
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My client cancelled his appointment because he said can't find his teeth and I thought that is so terrible but funny; it is hilarible.
by shades of yellow March 26, 2020
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A lazy man's word for hilarious. More funny than hilarious but not funny enough to actually say the entire word.
Jo: It was as hard as putting my beanbags in her turd cutter.
Jem: That's hilar-e-i!!
by jo & jem December 1, 2004
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