A term used to express annoyance or shock, can be used as an alternative to cursing. When used with a high pitched tone and an elongated vowel can be humourous and mocking. Also used as an insult. Macgee can also be added for effect.
Cowsie: I'm late for next lesson!
Friend: Oh Shiiiiiiiilters!
Slang form of "Filter-Shekan" which refers to softwares and network solutions used for bypassing internet censorship and filtering. It's not a common word at all.
My Shilterfekan doesn't connect.
They f*cked Shilterfekans again!
Tor is the best Shilterfekan ever.