Lyric discussion by Guerillabaabaa 

Cover art for Rusholme Ruffians lyrics by Smiths, The

I think it's just about the innocence of childhood and things. Although he sees all these horrible things around him, and an engaged woman flashing everyone etc. he still believes in love, and thinks that writing his name on a girl's arm is shows they love each other.

It's actually a bit knopfler-esque in that way