F.T. Island point out the member who is the worst at lip-syncing

When the MCs asked, "Are you generally good at lip-syncing?" The members answered, "Hongki is actually the worst at lip-syncing."

Hearing this, Hongki commented, "It's obvious when you make a mistake while singing the lyrics but when it comes to these friends playing on instruments, they can just switch back and forth between instruments, using their hands as tools. I found that really cool."

Can you always tell when Hongki is lip-syncing?