"That is a very creative name," Remus said while the entirety of his arm was submerged into the hat that Zatanna had offered. "I feel sorry for your past boyfriends. We do have a similar charm back home, though: the Undetectable Extension Charm," as he said this, he began to pull his arm back, "It works very much like this. It is also what we use to keep our wands in our pockets, among many others." And out popped from the hat, a rabbit.
"When you called them your pocket dimensions, though," he went on as he slipped Chanel back inside its hat, the cavity devouring his entire arm again, "I thought that you'd meant that there were worlds within them...spaces where you can walk inside." He was embarrassed to admit that he thought some of them might have a village inside them. "Much like a portal of sorts to another...well, dimension," he finished as he drew his arm back and out the hat. "I didn't realise that you'd meant extra spaces for objects all along..."