If anyone knows what I am talking about, the best way to get it, and the way I did it was to:
CLick the like button, launch developer tools, search for "has-liked", where it says "display: none;" change to "display: block;"... the options should show after. (I develop websites so...)
Managed to get it in Opera. If you right-click Like then select Inspect Element, you can search for has-liked (via tab in the right pane) and change the aforementioned value to block (double click it in the left pane to edit), then close out of the tool and you should be able to select your platform and gender to get the shirt.
* Other tips if you're getting "sorry out of codes" or it won't load: Open in 2 browser, also remove like and re-like again, or remove app from your fb account and redo over
Edited by iRandom, 23 June 2013 - 12:21 AM.