Re:Great Scott! (Score 1)

"English speakers often pronounce "GIF" with either an affricate as in "giraffe" /df/ or a plosive as in "gift" /gf/. The format's creators are quoted as using an affricate to pronounce the acronym. However, many people use the plosive pronunciation in daily conversation. The affricate was used as the developers had a sense of humour "Choosy Developers Choose GIF", making a play on a then-famous commercial for peanut butter."

http://en.wikipedia.org/wiki/GIF