y'all'd'nt've'd'd'i'd'nt've'd'y'all't've'd

The longest gramatically correct contraption, which means "You all would not have had, had I had not have had you all to have had."

P 1: We did it.
P 2: y'all'd'nt've'd'd'I'd'nt've'd'y'all't've'd

y'all'd'nt've'd'd'I'd'nt've'd'y'all't've'd

Meaning: You all would not have had ,had I had not have had you all to have had.

I don't recommend trying to explain this to someone with words, as they might have a heart attack. It's the longest grammatically correct contraction.

A: Oh my gosh! We finally did it! I'm so happy!

B: y'all'd'nt've'd'd'I'd'nt've'd'y'all't've'd...