When researching a topic online, on a website such as Wikipedia, "Tabbing" is the act of opening multiple links in new browser tabs, subsequently leading you astray from your original topic but simultaneously introducing you to new ones.

Got the covid-19 vaccine

Inserting a fist into the rectum and vagina simultaniously while "pumping" the fists in an in-and-out motion.

When you have an outline task when searching on the internet e.g. finding a rare item on shopping websites for such a long time that you have opened up a series of tabs to attempt to achieve this goal. The word is used in place of stating a URL when asked what you are doing on the internet

When you have downloaded a cat extension on your browser, and you are so bored that you open hundreds of tabs to see how many cats there are in the extension.

The act of falling asleep while watching a film or tv show.