A movie critic site which is one run by hipsters. They give terrible ratings to good/mainstream movies and extremely high ratings to "underground" or "cult classic" films that nobody has heard of.

A swimmer

A true act of terrorism for sick people. A “Rotten Tomato” is your typical latex water balloon with one major flaw, or upgrade depending on how sick you are. The tosser will fill a red, orange, yellow, or green balloon with one or more helpings of diarrhea (fresh or seasoned acceptable). The process of filling the balloon requires ingenuity beyond the scope of this article. Don’t be afraid to get creative.

A online community loosely based on reviewing/discussing movies.

An free, online compiler of movie reviews. Rotten Tomatoes generally compiles over 100 reviews for popular movies, and presents the average rating (based on the reviews that give stars) and the percent of good, or "fresh" reviews. If 60% or more of the reviews are fresh the movie is certified "fresh," otherwise, it is "rotten," hence the name of the cite.

When a a guy farts into a woman who is on the rag and then eats her out.

Something you throw at a bad actors in theater
It can an actual roten tomato or a different bit of litter or garbage.