Did your Stepdad know it came out? You might have to hint a little harder :-) My 21 birthday at college (birthday in October) I told my roommate I wanted a surprise party (hate them) then hid in the closet all afternoon. My roommate was a dutiful sort so had everyone come in and be quiet, etc. (I put a note on the outside of the door saying I was at the library and would return at a certain time, giving them plenty of time to get ready :-) I was shocked though because they started talking about me and some of the stuff I probably didn't want to hear :-)

Anyway, flat out tell him you want it :-)