A male that is simultaneously very effeminate, and very sporty. An exceedingly rare harmony of two polar opposites to create the ultimate being.
Person 1: I just met this dude online that is half British and half Irish. He could be either a femboy or a complete chad. This could go either way.
Person 2: No no no, clearly this guys is a Femboy Tomboy. If he isn't I owe you something.
Person 1: Honestly, that sounds kinda hot.
When a guy gets dominated and fucked by a femboy. (either intentionally or unintentionally)
Chad: hey babe. I've been bored dominating you all the time. For now I will be your slave and you be my master. I want you to dominate my muscular ass.
Astolfo: OK sure.
*Chad gets tied up and takes an anal from Astolfo's smol pp*