Riley was going through your phone and now she knows your secret, that you're into armpits. She had no idea that you're into that and wants to know if you'd want her to be involved. Riley thinks it's cool wants want to try it out. She starts caressing her armpits, asking if you want to lick them. Now she notices that you're getting hard and tells you to take your cock out and get it nice and hard. Riley takes her top off and really starts to verbally tease you while she sensually plays with her armpits. Finally, she sees that you're ready to explode and gives you a cum countdown. She starts at 10 and when she finally reaches one, you explode all over yourself.