It doesn't matter if you had a 10 inch
penis, wearing tighty-whities is not going
to affect it. The thing you need to worry
about are your testicles. If you have
something clamping down on your testicles
all the time, bad things can happen, so
that's what is truly important -- the size
of your balls, not your shaft.
Tighty-whities and tight jeans do irritate
me, so what I usually wear are boxer
briefs, because they don't scrunch up like
boxers, but don't suffocate me like briefs
do.