I moan as you comment on how my chest has "grown" and i feel your hard cock against me from behind "mm well Dustin looks like my boobs are not the only thing that has grown since we were kids".
"I've learned a few things since then too like how to do this!" and as I say 'this' I slap my cock against your clit a couple times sending bolts of pleasure rushing threw your body. listening to you moan in shock and pleasure I lean in and bite your collarbone. "now what have you learned Ashley?"
moaning feeling my lil sisters warm tongue run over my cock "keep that up and your gonna get a mouthful Ash," running my hands threw your hair knowing that I wouldn't be able to hold much back if you started sucking on my cock. But on the other hand wanting to bend you over and shove every inch deep inside you.
in cannot believe I am sucking my big brothers cock as it is wrong but in a taboo way feel so right. I keep bobbing my head feeling you grow harder in my mouth.