1 definition by maddbomberman

An acronym that means to "take it too far." Often is used to refer to someone who keeps trying to joke about the same topic long after it has stopped being funny and started to be really annoying. May also occur between a group of people who are too stupid/immmature to realize that their joking has strayed from relevance to complete fucking ridiculousness. Also can come in the form of TITFing which describes the act of TITF.
The above definition.

Jake's five minute TITFing session about how good he looks in jean shorts made me want to scissor kick the back of his head.
by maddbomberman February 24, 2009
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