I Say, You Say Louder
It’s when people argue by taking turns yelling the same phrase louder than the last person. It starts with a whisper, but it ends with someone screaming like they’re on fire.
My sister and I did 'unicorns' and it turned into a full-blown scream battle.
I used 'I do believe in fairies' with my friend and it was the funniest thing ever.
My cousin and I did 'penis' so loud the whole neighborhood heard it.