Would You Let Your Step Sis Help You Take Dick Pics?

While sexting your girlfriend, the idea comes up to swap dirty pics. You ask to see her pussy and she says that she will after you send a dick pic. Your room is trashed, so you go over to your step sis' room to take a quick pic. You step sis walks in on you and is not impressed. She agrees to help you take a better pic since she's kind of the expert between you two, but she's very insistent on making it look good. She offers to suck your cock to get it nice and hard for the pics. The only problem is that she keeps taking pictures where she's in them. You let her have her way because her blowjob skills are off the chart. Unbeknownst to you, see send the pics that she took sucking your cock to your girlfriend the moment you stepped out to grab a towel to clean up the cumshot you left on her tits!