Fun Size is one of those teenage comedy / love stories. The main story is basically about a kid that stopped talking once his father died a year ago, but is totally off the wall with everything else he does. During holloween somehow he ditches his sister and her bestfriend and has an adventure of his own with a lot of different people along the way. The second story line is a nerdy boy in love the hot but nerdy sister of the little kid. It was a normal teenage movie and was made by nickelodeon so it isn't as vulgar and dirty as I like my movies, but if you like fun loving teenage comedies then this is okay for you. 2 out of 5.