You remember that its Sunday, you're still free to do what you want with yourself. And your dad is still out of the house right now. Your girlfriend lives in the same building so you should probably see her, she's probably a bit weirded out by what you said but she'll be willing to accept it as you being half asleep. You decide to get dressed and head over.
You decide to get dressed, it's still disturbing to see yourself naked without a dick. Your shirts are the same, and your pants are mostly normal. But your underwear is clearly built for someone with a vagina, there's no hole in front and there's no space for your dick. Once you put everything on it feels so weird to have cloth tight against your crotch, so tight and flat. As you walked down the hall to see your girlfriend you definitely feel the absence of a penis. The flatness and emptiness, the lack of anything hanging down, and the feeling of an opening between your legs.
You knock on her door and she opens it. She's the same beautiful girl you've always known. Her adorable little face, petite build and stature, and her smooth soft breasts. She's so cute in her underwear, you assume she didn't have time to get dressed, and standards of modesty are different here. You're turned on, you should be rock hard right now, but there's nothing to get hard, it feels weird. You want to be inside her, to fuck her like you always did, but you don't have the equipment to do that.
She kisses you cheek, she's so cute. She says, "come inside. I'm sorry about the thing on the phone."
You reply, "its fine, I had just woken up."
"Well, my parents are asleep, we can do what we want together, not that they'd care alway."