This has got to be the most strange time travel movie I have ever seen, the plot is all over the place weird with time paradoxes and butterfly effect issues everywhere. The entire movie takes place in a single house it would seem and no one ever gets "outside" at all which is a bit unnerving and also all the windows are papered up. The language is extremely foul with the "f" word used more extensively than most any other word. I definitely would not recommend this for any kids or even young adults as it would just encourage this kind of trash talk from them. So discerning adults only. The main idea is very interesting and how it is worked out is rather innovative in a strange kind of way. Great movie to get stoned on for sure. I've known a few friends who were very much like these idiots in this movie. I won't say it's a waste of time, but it does take patience to get through the bad language and enjoy the movie.