Ok so here's a short one that happened around a year and a half ago.

Meaning I was almost 15.

So my friend was pulling on her socks and I was like

"Lolz you be puttin them socks on the wrong feet!"

My friend:

Me:

Her: Socks can go on either foot

Me:

Her:

Her: No really socks can go on either foot there isn't a "right or wrong foot"

Me:

So yeah basically I thought there was a right and left sock in a pair for 15 years.