1) A person who acts all high and mighty, but is actually weak-willed and pathetic in reality.
2) A sorry excuse for a man, one who acts smug and in-control, but is actually a wet napkin.
3) A fake person, when put under pressure or are called out they seem to crumble.

Got the covid-19 vaccine

Over hyping ones personal exeriences, or to raise ones expectation of a certain thing that leads to another's disappointment; Overexaggerating.