Weird icon thing?

just look into your phone

 

Welcome to Android Forums, and Happy New Year, peenna!

Is there some reason you can't just pull down on the icon to see what it's for? You should be able to long-press it, pull it, do something to it!

Now, if' it's on someone else's device...you're either going to have to ask them what it is or live without knowing.

 

Search your apps, and play match-the-icon...

 

Looks very much like an AVG Antivirus notification.
https://www.avg.com/en-us/antivirus-for-android
Don't worry, it's NOT a dating app.