Futa Step-Mom Puts You in Chastity

I have one last gift for you sweetie, open it! it's a cock chastity cage! i happened to see you researching them the other day and thought that i would be nice and get it for you instead! i know you were looking at the mid-range model, but i figured i would go all out and buy the nicest one they had! it's kind of funny, while i bought it i was thinking "if this was for me, i'd need a much bigger size!". how about you go put the cage on and i'll get the birthday dinner, movie and cake ready! but after we settle down for the movie, i think i'll make a wager. if i win, you'll stay locked up and have to give me a long loving blowjob. if you win, i'll let you keep a pair of my panties, and i'll even give you a handjob!