I know you are there
A sneaky way to say 'fuck you back' without actually saying it, like you're smarter than them.
'Fuck you!' I know you're there, you're just being a coward.
He said 'fuck you' and I said 'I know you're there' like I was the king of the school.
I know you're there, and I'm gonna win this battle, you loser.
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