Foundation related puns, both of the trash and garbage variety, go here. I'll start.
Three soldiers of an exploration MTF stand before SCP-2264-A.
Their commander addresses them: "alright, men - your mission is to enter the gate, where you'll find the extradimensional city, Alagadda - do whatever is needed to get our agent back."
The first soldier appears visibly agitated.
"Something wrong?" Says the commander. "Perhaps you've heard the rumors of the city of Alagadda."
The first soldier takes a deep breath. "I see, it's the city's name. My apologies."
"It's just - as a lifelong member of the Islamic faith, I get a little uneasy when mortals try to decide what Alagadda do."