I certainly lurk enough, I feel I owe a few answers. That and I'm bored.
Why are boys always so insensitive?
Because we know little of etiquette, mostly. Also, we don't realize what effects our words may have, as other guys wouldn't be upset by them.
Why do some boys think it's alright to adjust themselves in public?
Dunno. It can get uncomfortable, but I never do so in public.
Are boys really that obsessed with their penises?
Not the guys I hang out with. I view it as an instrument for urinating.
When you like/fancy a girl, do you ever imagine her naked or having sex with her?
Nope. I don''t really "fancy" a girl for anything other than actual personality/mind.
What makes "bad sex" bad?
Check back when I've had bad sex. Or any for that matter. Though, in my case, I would assume it would be sex not done out of love, for both of the partners.
Why do very few guys cry? What is it that could make a guy cry?
Meh, there's nothing worth crying about, really. Really bad things that warrant crying rarely happen. If someone I love died, for example, I would cry.
How do you see love? What does it mean to you? How do you know what is love? How does it feel? (a personal question)
Love [romantic] is believing that someone else is the most important and precious thing in the world. I would elaborate, but I'm in a "brief answer" mood.
Does it make you feel nervous when a guy stands at the urinal next to yours?
Not really. I'll just ignore them, I don't care too much.
Is the statement "the way to a man's heart is through his stomach" true?
Well, I do love to eat (and I'm lucky enough to have a high metabolism). But it's not the whole way. But give me good food, and I'll like you.