Load up on guns......means to get a load of guns... load means a large quantity Lose the revolution.....means the teenage revolution......He is being sarcastic here, I think Honestly, I know this is a famous song but it reads like he made it up five minutes before he sang it......just kidding .... he may have worked on it for an hour.

Honestly the whole song is more about the media. its about how the people evolve themselves around society and the media, and how corrupted it can be.

"load up on guns"- Заряжайте ружья "It is fun to lose and to pretend" - Это весело – проигрывать и притворяться. Полный перевод песни на http://www.amalgama-lab.com/songs/n/nirvana/smells_like_teen_spirit.html