It may be illegal to drink these on a plane (from one of the comments):
"Sec. 121.575
Alcoholic beverages.
(a) No person may drink any alcoholic beverage aboard an aircraft unless the certificate holder operating the aircraft has served that beverage to him."
Classic. I just finished a rotation-based training program, and this is how my co-workers and I got through the constant travel. The TSA never took any issue with it, and many folks were quite amused/inspired by it.
"Sec. 121.575 Alcoholic beverages.
(a) No person may drink any alcoholic beverage aboard an aircraft unless the certificate holder operating the aircraft has served that beverage to him."
http://www.airweb.faa.gov/Regulatory_and_Guidance_Library%5C...