IIRC - If I Recall Correctly. Especially common to be used when trying to cover up a vague guess, or when you are truly befuddled and trying to recall a fact of some sort.
<Nerds talking> IIRC in hypertext markup language an <a href="url"> tag constitutes a hyperlink. <Standard talk> IIRC, his dad is 7'5 or some ridiculous amount of the sort.
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