After two weeks of working on a project, you know whether it will work or not.

I've been on a diet for two weeks and all I've lost is two weeks.

One time, I had a nightmare for two weeks after an advert.

You know what you are getting into, but being out in that heat for two weeks definitely drains your energy.

I'm superstitious... but not like wear the same underwear for two weeks superstitious.

My idea of a beach holiday is going to New York for two weeks, just going and hanging out.