Jacktwat - You're trying to insult someone, but you're not sure if they

You're trying to insult someone, but you're not sure if they're a guy or a girl. So you just call them a jacktwat.

I'm gonna insult them. They're a jacktwat.

I don't know if they're a guy or a girl. They're a jacktwat.

I'm trying to be mean. They're a jacktwat.