Flaccid Increase through Water, restraint from coffee

I drink water every day. I didn't think that can help lenghten my penis. Well from time to time my penis does start to hang a lot more. I am proud of what I got and I can't complain about my erect cock either.

I used to put those hand warmer things in my underwear and it really made the veins stick out and my penis hang fuller. They are pritty cheap at wal-mart too. I would just take it out before messing around to avoid an awkward conversation.

Also I like to wear certain materials that constantly cause sensation, giving a somewhat hard on all day. Like freeballing in jeans almost always does it for me.

I don't smoke either tobacco or pot, I don't know what is meth but I guess I don't take/use it I may drink a beer or two a week (no more wine since I happened it makes me sick every time I drink it), so, I have no chances to enhance my ridiculous hang???
I think my problem is also due to low blood pressure but it's true that by drinking lot of liquids (think that I don't do enough, it's very good not just for hanging but for total health) things get better, in my case the difference between flaccid and erected is way huge, not meaning I'm huge when erect but sometimes my flaccid is embarrassing.

any suggestion is very very very welcome (I don't tell you when my ex gf asked me why was I shy to change my underwear in front of her