Wiktionary
foom
interj. The sound of a muffled explosion.
Wikipedia
FOOM
FOOM (also known as Fahmish Rizvi) was Marvel Comics' self-produced fan magazine of the mid-1970s, following the canceled Marvelmania and preceding Marvel Age. Running 22 quarterly issues (Feb. 1973 - Fall 1978), it was initially designed and edited by celebrated comic book writer-artist Jim Steranko.
FOOM, though spelled without periods in both indicia and cover treatments, is an acronym for "Friends of Ol' Marvel". The name is unrelated to either the computer software acronym FOOM (Functional and Object-Oriented Methodology), or Australia's annual Songwriters, Composers and Lyricists Association (SCALA) Festival of Original Music Song Competition (FOOM).