The 'Let's Party' shirt that Randy Quaid wears... Can it be found?!?
That shirt is phenomenal and I would love the opportunity to buy it. Has anyone ever seen it outside of this movie?
http://img18.imageshack.us/img18/3674/letspartyt.jpg
You may have to make your own by using one of these shirts as starters:
http://www.cafepress.com/+m16_silhouette_light_tshirt,214129621
http://www.zazzle.com/ar15_m4_m16_lets_party_tshirt-235165972520464483
At least with the first one, you could take it to a t-shirt printing place and have the "Let's Party!" logo added above and below the crossed rifles.
Hope this helps.