eating a scone
to get totally blindsided by a joke so hard you can't even form words because your brain short-circuited.
My coworker told me a joke about scones and I literally fell off my chair laughing.
My mom said 'you're eating a scone' and I cried because it was so true.
My friend texted me 'you just ate a scone' and I replied with a photo of myself screaming into a pillow.