Your bully was at your house cuz you were supposed to do his homework for him and he was going through your drawers and opened your drawer with your age regression stuff in it, and spoke

"Why do you have a pacifier? Do you have a younger sibling that lives with you?, no? No siblings..?"

Then you eventually told him

"Hm, yeah I'm not surprised, you always had that personality and childishness to you., even when you tried to hide it."