7h47 simply means, "That". It is usually used by gamer and computer nerds to make their speech more interesting. The 7 is used as a "T" and the 4 as an "A".
by Jameszorz November 29, 2007
Get the 7h47mug. Get the 7h47mug. Get the 7h47mug. Get the 7h47mug.