Chris²

2(Chris)

No, it's Chris+Chris so 2Chris, and Celticrose, it's 1+1 not 2+2

Really, 1+1 equals 4? Because thats what 2x2 equals.

Oh.
But where did that 2+2 come from? Cuz the post only got one Chris and one Chris

It comes from where Frisk stated that adding does not give you a square. While that is usually the case, there is an exception, 2+2/2^2