A Sly Keenan
You're online and you're being a total coward by not replying to someone. That’s called a sly keenan.
'He’s online and he won’t reply. He’s acting like a total coward.'
'He’s ignoring me, and he’s online. He’s being a total coward.'
'He’s online, but he’s being a total coward by not replying to me.'