I couldn't believe Karen was talking like this. Here I was, with my dick hanging out, jacking off over the playfulness of my sisters, and she's telling I'll never have to jack off again. I didn't know what to say so i said the first thing that popped into my head, "I'll be VERY good to my sisters." Andrea's compromising position brought some ideas to me (she was on all fours, sucking Karen's tits). i bent over and began to lick her pussy and asshole.