The BB is 20c that doesnt change.. The BB would put what he has, 10c, into the main pot. Any player that wanted to play that hand would put 10c into the main pot and another 10c, along with any raises, into a side pot. So if no raises, each player is in for 20c. 10c in the main pot, and 10c in side pot. Although this is a home game and ya'll can do whatever the hell you want.
So the BB could only win 10c off of each player. Although since i am guessing you are all friends one of you could have spotted him 10c or even a $1, im just saying :P
Cheers! hope this helped.