s****r in law SeXStoRY

my s****r-in-law is kinda hot late 30's but a good body and hot blonde hair she stays with us often so she can go out clubbing with the mrs the thing is she keeps walking in on me when im in bed asl**p. due to the hot weather recently i have been sl**ping naked and kickin off the covers, last night was no different at about 3am they roll in (im asl**p at this point) i hear my bedroom door open, i assume its he mrs but something is different i feel a hand on the shaft of my semi hard cock and a tounge licking the tip i look down and instead of seeing my mrs brown hair i see blonde hair. i said you shouldnt be doing that but she looks up and says its ok this is a late birthday treat and the mrs knows and is fine with it as it was her idea 5 mins later the door opens again and its the mrs with a bg smile on her face she says happy birthday strips off and lowers her pussy on my face..... wanna know more let me know