I once got that way at a funeral wake,,walking down the stairs in the family home and toward the coffin I just went into giggles as did my friend, we were in college, and we couldn’t stop,,,it was truly horrible but we couldn’t stop.
Went one night to a novena at church...Sat in the front with only about 20 people in church...When the priest picked up that thingy with the holy water in it to sprinkle on the people the end flew off and ended up half way down the aisle, I tried to stifle, but could not as he left the sanctuary and walked down the aisle to pick it up...I still laugh when I remember the look on his face when it went flying....