My funniest pms moment was when my best friend and I where on our periods at the same time. Like the EXACT SAME TIME. we got it the same hour. And we had the same mood swings at the EXACT SAME TIME. I always heard that the woman you spend the most time with started to have synced cycles, but i never thought it would be this extreme.We were in theater rehearsal and busted out laughing hysterically for 20 mins straight for no reason and got kicked out. Then we both looked at each other and started crying out eyes out. And then after we finally got though the rehearsal we were both shouting at ppl for no reason.Then after we were mad we started laughing again with tears falling down our faces. Everyone thought we were high.