@Zailrand of course all the time.
Reminds me of a art history class in undergrad. Class was just starting, professor speaking, everyone taking notes and suddenly loudly a woman moaning LOUDLY. Look to the back of the auditorium and a young man has a panicked look and is feverishly poking his phone screen. The moaning gets LOUDER. Finally he screams at his phone "OMG shut up!" Face full on his screen. He stands up and races from the room with the moaning woman phone echoing his exit.