While I would guess it's possible, might it not be better to use topical Testosterone for this purpose? That's available from Amazon.... No 'script.
Use when Woody needs to play, and then tuck him away when done?
Now, it could mean some bad effects for the lady you're with, if it's a frequent thing - e.g., facial hair growth, body hair growth. But if it's only a now and then, it would probably be limited, and using a wrapper would prevent a lot of transference.
Os that your intended goal, or are you looking to maximin the feminization and masculinize only the desired spots?