WTHDTM
WTHDTM definition by Slang.net
This page explains what the acronym "WTHDTM" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.
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WTHDTM stands for "what the heck does that mean." People may use this rather-excited acronym to ask for clarification when they don't understand something.
A person who sends you WTHDTM is likely a) upset and b) very confused. If possible, you may want to give the person a call or meet up IRL to explain what you mean.