[Lets him do that, except when he touches him he'll be vibing him too - seeing a moment from their past, the two of them at the workshop back in S.T.A.R. Labs. Cisco busy at work while singing some dumb song happily, Harry who looks like he should be busy too but he's too distracted watching him, smiling to himself.
The moment Cisco turns around he's scowling again, barking about him being too loud.]