A word used to describe an object when one has forgotten it's proper name; used to describe a thing or group of things when one does not know what it or they are called.

the thing that you don’t have when you’re phones percentage is over 20

thinger is a thing, something, thingamajig, and whatchamacallit. Used when referring to some kind of web entity including applications, procedures, etc.
Sometimes used to refer to people as a substitute for whatshisname or whatshername.

Used to refer to a generic object, something whose correct nomenclature currently escapes the speaker.

Thingers are misshaped thumbs that resemble fingers. Potentially advantageous in thumb wrestling or video games. Notable celebrity with thingers, Megan Fox.

Used in a sentence to replace a word that is usually stupid.

When you have a thing with someone, you will get called Thingers.

It's basically another way calling someone your boyfriend or girlfriend