if it looks like they have a bump in there pantsa.
you see a bulge running downward along the zipper
It could mean he is getting an erection, or his clothes are uncomfortable, just like when a girl adjusts her bra.
If by "bonner" you mean "boner" it means when a guy gets an erection.
Try by telling him what turns you on. Or ask him what he wants you to do to him, and when your finished, coyly says its his turn. Squeezing his erection through his pants, then getting it out and stroking it, caressing his sack. Whisper dirty words to tell him what you are going to do to him!
sometimes he might feel awkward sometimes he might feel the same about you or he might just get an erection
It more than likely refers to a male getting an erection due to a certain female.
masurbate, and if you already are doing that, do it a lot more often because it will lessen your erections
Dirty dancing, lapdances, stripping yourself, playing with yourself, ect.
His penis was erect.
Answer Don't be the last one out because you are shy, ask the guy what he thinks of the two of you getting together.
There are no physical changes other than the obvious erection. The male may act differently due to trying to hide it though
To do it with out getting into trouble? Have one of your more brave friends do it.