Generally while you are in cold temperatures that will cause the penis to shrink some.
You can't.
Hypertonic conditions make a cell shrink .
Nothing can make it shrink either.
to make small
there private part is a secret
Make sure you wash yourself everyday and keep clean.
I have believed that coffee would make you shrink in height but it isn't scientifically proved that this does. Sorry but i don't think any foods can make you shrink in height although I wish there was. =P
Hanes make tagless no shrink womens t-shirt's.
To make smaller
no
it is very rare that people can shrink scientists can make potions that shrink and make you biggger again if you know a scientest you can ask if he can then you/someone can go in your kids toys and stuff=)
It depends on the material, but normally if you wash and then dry it at a high heat it will shrink.
make the cell shrink