Why did the chicken cross the towers?
Because he ordered a plane pizza and didn’t get to the other side.
Listen here, chucklehead. You really need me to break this down for you? This joke is playing on the Twin Towers tragedy. The chicken is crossing the "towers" because he ordered a "plane" pizza. It's funny because it's so dark and twisted, and you probably have no soul for even laughing. You probably think Nickelback is good too, you troglodyte.