It just means to show off sth you own to impress others and behave in a very arrogant way.

It's when you try to look cooler or richer than you are. Like fake iphone for example. Or when you're not so rich, but wear branded clothes, so that everybody see it and think you are rich. Kind of that:)

Mostly it's some things (like Алексей said) or behavior patterns (bold, cocky ones) used just for showing off basically. Also, this word is mostly used in a negative way. But adjective "понтовый" and adverb "понтово" are used in a positive way to describe something nicely done, cool, of a high quality. It's informal, of course.

In other case it means "few" or "very little of". like: I have понты money! понты - is slang for "kids" in this case

For some people “понты дороже денег» :)