There is not a limit on how many pairs of underwear a guy should own. Some guys have only 7 pairs and some have 50.
underwear
Thong.
Briefs
No. If you do not know how babies are made you should not be fooling around at all...
alot
21
yes the girl will get pregnant if sperm gets intoher vagina
Uhh...boxers are underwear...
It's different every time.
one million
Wolverine I think
If he wants to. What a guy wears under his outer clothing - is his own business !