conniption

noun

Etymology: Since 1833, from American English. Unknown origin, probably a fanciful alteration of corruption etc., or maybe related to captious.

1. A fit of anger or panic; conniption fit.

   “When she came downstairs and saw what her children were eating, she had a conniption.”

   “I'm in conniptions for the final act you came here for”

2. A fit of laughing; convulsion.

   “The joke was not that funny, but he went into conniptions laughing.”