What is the meaning of sipfy?

I came across this word online somewhere. I don’t remember where. At first, I thought it might just be a typo. But then just to be sure I looked it up in the dictionary. No results.

Then I thought it might be slang, so I googled “sipfy meaning”. Some results came up, but it still seems rather unclear.

Also, in some of the results, the word came up as s i p f y. What’s up with the spaces? Are there other words (or phrases) that use this weird space thingy?