I hate algebra but here is an equation for you:
One kid who is a later bloomer losing teeth + one kid who is slightly early/average losing tooth = two kids who are two years apart both losing the same teeth in the same summer.
BOTH of Jadyn's top front teeth were loose. The one that was the least loose got knocked more loose when she ran into the countertop putting clothes in the hamper Monday night. Yesterday afternoon that tooth fell out after she spent all day pushing it around with her tongue:
One down, one to go and I will have two kids without any top front teeth! How crazy is that?