What does "show off" mean?

Many people on Instagram like to show off every part of their lives to prove how much they are happy and great. Most of them dont show the reality 😀

Many people do not want to show off their knowledge as they are beautiful to learn more things.On the other hand some people do now know anything but they want to show off many things.The dissertationsguru is helping them know about the use of this word in the appropriate place and in the right meaning of this word.

I know she’s got a lot of talents, but she’s just shy to show them off.

Well i have a friend she shows off,well but i like her i think so well i dont think being good enough for her the suck i am

i love to show off my cooking. yesterday was the dragon boat festival, i made many “zongzi”, then gave them to my friends and relative as the presents.