I could be wrong, but aren't these simply notes on some kind of medical examination? One finger is a bit bent; and as a separate issue, he claims to have a speech impediment, though the note dismisses this as 'shuffle' (OED: An evasive trick, evasion, subterfuge).
Nevertheless, I'd be interested to know if there was some kind of coded language used to describe homosexuality. A couple of 20th century phrases come to mind, and I've sometimes wondered if their use invariably implies this.
(Written while others were replying, hence partial repetition of ideas)