Here are the correct lyrics to SNAFU, with some explanatory notes for those whose English may be limited: 

 SNAFU 
 Take a good look, Bud!   
 You're looking at a trio of chicks 
 who've been through the mill! 
 We've been to London, North Africa,  
 we've flown on a plane 
 all over Brazil! 
 We learned an awful lot from all you fellas (I'll say!), 
 but there was just one thing no one would tell us.... 
 SNAFU! What is the meaning of SNAFU? 
 What's it all about? 
 Can't figure it out!  
 Is it contagious? Or simply outrageous? 
 SNAFU! We hear it everywhere, SNAFU! 
 Is it like a pill? Or is it a thrill?  
 Is it a military secret? 
 We asked a looey* who at first was rather formal, 
 and then he laughed and shouted "Situation normal!" 
 SNAFU! The greatest mystery in history! 
 Fun is fun, but why can't we find anyone 
 to spill the beans? 
 Tell us what SNAFU Means! 
 SNAFU! What is the meaning of SNAFU? 
 Is it something new that officers do? 
 Is it a dropkick?**  Or only a topkick?*** 
 SNAFU! We hear it everywhere, SNAFU! 
 Is it cold or hot? Inspected or not? 
 Is it a pot**** - of GI coffee? 
 We wrote a congressman for further information. 
 He said, “You'll have to start your own investigation!” 
 SNAFU! The greatest mystery in history! 
 Now, fun is fun, but why can't we find anyone 
 to spill the beans? 
 Tell us what SNAFU means! 

 Bud = Any guy (you could substitute “Pal” or “Friend” or “Joe”). 
 Chicks = Girls, women. 
 To go through the mill = To gain experience (usually not in a good way). 
 To spill the beans = To reveal a secret (sometimes accidentally). 
 Inspected or not? = I think this is a naughty reference to military VD (“short arm”) inspections. (VD = STD) 
 *looey = lieutenant 
 **dropkick = a move in football (but here I suspect it’s something else, maybe naughty) 
 ***topkick = sergeant 
 ****pot = toilet (probably) 
 GI = Government Issue = soldier(s’) 

 SNAFU, BTW, means "Situation Normal, All Fucked Up!" 
 Its counterparts are TARFU ("Things Are Really Fucked Up!") 
 and FUBAR ("Fucked Up Beyond All Recognition!") 
 All of the above are WWII slang.