Son: Dad, where are you?
Dad: Getting another one.
Son: Getting what?
Dad: Dad.
Son: Dad, where are you?
Dad: Getting another one.
Son: Getting what?
Dad: Dad.
Listen up, chucklehead! The joke here is that the son asks where his dad is, and the dad says he's "getting another one." The son is all like, "Another what?" and the dad drops the bomb that he's getting another 'Dad,' as in, becoming a dad again! Congrats on failing to understand such a simple thing, by the way, lol.