2 skater punks.

You look back and see 2 skater looking punks both about 5' 10" and 6' wearing grungy jeans and ripped shirts. They walk up to you and one grabs you and plants a kiss on your mouth and the other grabs the hem of your dress and starts lifting it off of you. You try to resist but they are far stronger than you and in seconds you are standing there in your stockings and undies. They then pause to see the truth of the situation.

You are a guy in drag.

Or perhaps something magic has happened and you are really a shemale.

Or even stranger you are now a chick.