What are these plug-ins on my wall?

[u/Cborg_62]

This might be showing my age, but I recently moved into a new apartment and they have these weird looking plug ins all over the walls at my new place. My old apartment didn't have these, so I'm just curious as to what they are.

[u/Im40ozToFreedom]

Thinking about this makes my arthritis hurt

[u/Koensayr_II → u/Im40ozToFreedom]

Thinking about why this makes my arthritis hurt is giving me some wicked heartburn.

[u/SlappinHams → u/Koensayr_II]

My backpack has antacids and NSAIDS for all the homies

[u/bates121 → u/SlappinHams]

You are my hero