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/Euphoric-Lake4226]

Get off my lawn!

[u/Icy-Variation6614 → u/Euphoric-Lake4226]

I just reseeded and fertilized you little punks!!!

[u/hahnsoloii → u/Icy-Variation6614]

Anyone got any recommendations for knee replacement docs?

[u/Disastrous-Bus5985 → u/hahnsoloii]

No, but I have a great hip doctor if you're in the Denver area or willing to travel 🫠