Ma'alsh
You're so uninterested in something, but you're still trying to look like you're slightly interested, even though it's clearly a waste of time.
'I don't care about the movie, but I'm still here trying to look like I do.'
'I don't care about the party, but I'm still here trying to look like I do.'
'I don't care about the fight, but I'm still here trying to look like I do.'