Where to buy: The SILF shirt from the Flagpole Sitta vimeo

By now we trust you've been emailed the viral clip of Vimeo employees enthusiastically karaoke-ing Harvey Danger's "Flagpole Sitta." Top two questions thereafter have been: 1) where do I send my application?, and 2) where do I get that t-shirt? Consider mystery #2 solved.
Unrelated note to any Saffire interns who stumble across this post while researching the origins of the MILF acronym for the Times: can you guys point out to Tori Amos that by singing "I an a(n) MILF" in that new single of hers, she's actually saying that she wants to fuck herself?