WTLY 

Welcome to last year.

An acronym commonly used on the internet to let another person know that they just brought up some really old news.

Person 1: Hey everyone, look at this funny video of cats running into walls!
Person 2: WTLY

WTLY by JohnnyCakes December 16, 2005

wtlyk

Wanted to let you know

Just wtlyk I arrived safely

wtlyk by Mammmacita October 19, 2020