I had that shirt back in the day!
A lot of people have made parodies of that KISS shirt. I choose to put the SS first because in type here in the interwebs, I've seen it's more commonly abbreviated as 'SSFG'. Hell, look at the name of the forum you're in.
Just for kicks, I wore one all day yesterday. The guy I always deal with at the post office asked "Oh man...is that one of yours?" I responed "Yeah...I've been getting some **** for it too". He follows up with "Why? People don't dig KISS?"
* If anyone else has questions of comments about the 'SSFG Army' shirt, please either send me a PM or post in one of the two threads I've provided links to above.