You flip over onto your back, then, with your front arms, you grab both cocks.
And rub them vigorously. Cum shooting out. Warm, hot, sticky cum.
Then you smell your own seed, making you cum harder. "Why should just my front legs have to do all the work?" You ask yourself.
To awnser your own question, you grab your balls with your back legs and squeeze so hard that all the cum comes out.
Fire explodes out of your mouth, cocks, and nose as you roar in pleasure.
Then you pass out.
When you wake up, you wonder what you are, then you remember the events of yesterday. You are free to do as you wish, as a dragon. You could find a mate, that's if there are any.