phillum
n.— Note: From an exaggerated pronunciation of “film.” This term seems to be similar to the American fil-lim. «If you are looking for a “timepass phillum” this weekend, pass on this one. “Dil Pe Mat Le Yaar” is not only an intelligent film but a film that will make the willing viewer think.» —“Dil Pe Mat Le Yaar” by Anish Khanna Planet Bollywood (San Ramon, California) Mar. 6, 2002. (source: Double-Tongued Dictionary)
Further reading
How do you pronounce Henry David Thoreau’s last name? It’s not “thur-ROH” but “THUR-roh,” as if pronounced like the word thorough, with the accent on the first syllable. The author of Walden (Bookshop|Amazon) had a French grandfather who was...
Why do speakers of the same language have different accents? A lively new book called Why We Talk Funny offers a linguist’s look at how and why accents develop. And: If you’ve “stood up” at a wedding, were you supporting the marriage or objecting to...
“Fillum”, however spelt, is a long-established colloquial/humorous pronunciation of “film” in British English. I remember my Grimsby gradparents using it (seriously), which would have been in the 1950s.
Also, “fillym” is the Manx word for film.