Salmon
What kind of fish jumps from dirt to dirt? A salmon!
When you're at the river watching salmon jumping up stream, they keep jumping onto the dirt, flopping back into the water, then doing it again.
かい, けい
さけ, しゃけ
None
You make a drinking game out of watching the salmon going up stream. Every time one jumps onto the dirt, you drink a shot of 酒 (さけ). You realize you're drunk when you ask for more さけ but it comes out as しゃけ.
Salmon. Drink さけ. Salmon. Drink さけ. Salmon. Drink... "Ughhh.... I'm feeling tipsy... Hey, where's my しゃけ!?"