The Meaning of SIFS – SIFS means “Secret Internet Fatties“. It is an internet acronym. What does SIFS mean? SIFS is an abbreviation that stands for “Secret Internet Fatties”. Check the content shared below on this page to find out SIFS definition and all the information related to acronym SIFS in FAQ format.

What does SIFS mean?

SIFS is an acronym, abbreviation or slang word which means “Secret Internet Fatties”. It is used during chats and online conversations on forums, social networking sites and chat rooms.

The Meaning of SIFS

SIFS means “Secret Internet Fatties”.

What is SIFS?

SIFS is “Secret Internet Fatties”.

SIFS Definition / SIFS Means

The definition of SIFS is “Secret Internet Fatties”.