Bangbros.com Why Does The Screen Say "www.Bangbros.com" After My Son Leaves Even Though He Is Only Doing Homework?

Why does the screen say "www.Bangbros.com" after my son leaves even though he is only doing homework? - bangbros.com

Every evening during the school year, my son told me he has homework on the family computer. Sometimes I just check your work, but the screen is www.Bangbros.com and a daughter. Is it a site help, or what? He asks me to give, a password each time, but I do not know. Help please?