Can't Go Under It

Alright, listen up, buttercup. This joke refers to the Twin Towers. The "can't go under, can't go over, gotta go through" bit is from the children's song "We're Going on a Bear Hunt." But, like, the Twin Towers aren't there anymore because some real bad dudes flew planes into them. So, yeah, you're laughing at a tragedy. You absolute walnut.