Slanguage Barrier

When a non-native speaker fails to grip the slang implications of something that would otherwise seem reasonable to say/wear on clothing. You know it when you see it.

"That kid's shirt says Dream Hum on the back…"
"slanguage barrier"

callie barrier

A pillow between you and your bestie because she’s too drunk to drive home and sleeping in your bed with you

I had to put up the Callie barrier last night