Pun 1: Cows go 5
Pun 2: Why was the math book sad? 3
Pun 3: What do you call a group of 2 cows jumping over a 1
Pun 4: I'm reading a book about anti-gravity, 4 it's impossible 1 to put it down
Pun 5: We're going to the store, and I'm buying some 2 of those 2