when someone is getting on your nerves, you can either call them a 'bulltwatter'
or simply tell them to 'go twat a bull'
Will: I hate you, you're really short and ugly.
Alice: Go twat a bull you bulltwatter.
Will: Did you know that blablablablabla, and blablabla, and also blablabladebalbla bla.
Alice: You're getting on my nerves, go twat a bull.