Two planes crashed into two separate towers.
Now two towers crash into two separate planes.
Two planes crashed into two separate towers.
Now two towers crash into two separate planes.
Alright listen up, buttercup. This joke is dark, like your chances of getting a date. First, planes hit towers (think 9/11, genius). Then, in a twisted turn, the towers hit back at the planes. It's like saying 'I know you are but what am I?' but with more tragedy and less self-awareness. Sheesh.