Please accept my apologies for the rather crappy nature of the photo below. Apparently the camera on my MacBook doesn't like sunny mornings. (How Seattle of it!)
Hopefully you can make out enough of it to see that the shirt bears the same image found on this blog's header.
In case I haven't said it before, the text on the shirt is Japanese for “shall we do it?” and it comes from a rather dirty--and gay--manga called Kuso Miso Technique that was first published back in 1987.