Urban dictionary defintions of twinkie:
1. twinkie
604 up, 94 down
An asian person who is either adopted or living in a white community. Hence, yellow on the outside and white on the inside.
Yo, that Alex kid is such a twinkie. He says dude and he is so bad at math!
6. twinkie
113 up, 81 down
American Gay Term: Refers to a young pretty gay boy that is very fun to look at, play with, filled with white creme but has no nutritional (intellectual) value whatsoever. Twinks are usually referred to by older men. Has a mixed intent, can be meant negativaly as in "Damn twinks dont have the sence god gave a rock" or positivly "Man that twink is hot, wish he'd come over and __________!"
I see Mark is dating a Twinkie again... wonder how long that's going to last?
Im guessing you mean number sex since youre very into the gay community.