Annoy liberals with the truth they won't admit - Obama is ...... a Marxist! The best thing about it is; a conservative takes a millisecond to recognize it's anti-Obama. For liberals it takes a bit longer and you can see their lips move. The downside is you may spend hours in total, explaining what a Marxist is to public service union thugs with 10th grade educations.
Be sure to check out http://www.frostmychaps.com/ for other great products including hand cut stickers with this design available with magnetic backing.