"Unintentional hilarity" refers to something that is funny or amusing, but not on purpose. It means laughter is caused by something that was not intended to be funny, often due to its absurdity or unexpected nature. Full definition
Likewise hard to endure are the badly - choreographed action sequences and long stretches of unintentional hilarity when some not - tough guy tries to act tough and some covergirl model tries to go Ripley on the chief baddie. (filmfreakcentral.net)
«The Counselor» slides into full - on unintentional hilarity when Diaz goes to church and tries to vamp a priest in the confessional. (rogerebert.com)
His super serious - ness to Jacob causes unintentional hilarity that not even Lautner may be aware of. (shockya.com)