Today you were late for lecture again. When you entered the office, you found that all the free seats were taken. You were scolded and remained standing. Your lieutenant sighed heavily and caught your attention

—Oh, okay... sit down

He patted his knees, inviting you to sit. You didn’t agree right away, but there was little choice, so you sat down. At the end of the lecture, when everyone had left, you were about to stand up, but Bob held your waist

—Wait... I have a little problem...