Word of the day - 外挂

Learned a new word in HiNative.com.

Someone asked, "What does 外挂 mean?"

The chrome extension dictionary explained the word as
1) attached externally (eg, fuel tank)
2) plug-in
3) add-on
4) special software used to cheat in an online game

Both answers given in HiNative were (4). Which I guess when without context, 外挂 is more popularly known as something that people use to cheat when playing online games.

One helpful person further went on to give an example sentence “像开了外挂一样” - which was explained as when describing someone using this sentence, means that person's life and etc is very smooth sailing, so smooth sailing to the point that it's easy to make other people jealous.