I walk in on my s0n jerking off with my panties! I'm shocked and surprised at first but then I tell my s0n to carry on and I give him jerk off instructions. I strip down to my bra and panties, continuing to instruct my s0n on stroking for me. I show off the panties I'm wearing and then I turn around and give my s0n a view of my sexy ass! When my s0n is close to cumming, I give him a cum countdown. I'm surprised and I laugh and am pleased at my step-son because some of his cum went all over me!