"Look at the lils on that"

Am I the only one to have been around the sort of man who says things like that? At least two of the hd_worldcup fics I've read (and I'm still on April 6th) have Harry and his family calling his daughter Lils. What? 'Lils' is slang for breasts! And even if you aren't aware of that if you must shorten Lily surely the obvious (and traditional) option would be Lil? I guess it's just me then.