Awesome
An image with a long, murky history with 4chan and Something Awful. Popular with probably every board, including /tg/.
If someone replies to your post with this image attached, he is essentially saying something along the lines of "fuck you" or "you're a fucking retard". This person is probably correct, since the purpose of /tg/ is /to generate/ RAGE.
External Links
ED's awesome article, featuring XBAWKS HEUG gallery of Awesome mutations
Gallery
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Awesome is back, IN CAT FORM!