OMTF 

Abbreviation- Oh My Tooth Fairy; an atheist's version of OMG. Substituting in another imaginary being rather than God.

Christian: Accepting Jesus Christ as your savior is the only way to live!!!!
Atheist: OMTF. IDGAF. STFU.

OMTF by wtfjen January 7, 2010

OMTFG 

OMTFG = Oh My TitFucking God

The expression comes from Team America

OMTFG, what a n00b

OMTFG, that sucked...

OMTFG by Skaery January 20, 2006

OMTFC 

Acronym for Oh My Titty Fucking Christ. Used to state displeasure on a subject or statement.

OMTFC why the hell did you say that?

OMTFC by NikaoMoon August 4, 2007