Soon the damp ground began to soak the seat of his trousers.
The strokes are delivered to the seat of the boy's trousers.
The punishment is delivered across the seat of the student's trousers or skirt.
Nor did I even have time for any mental kicks in the seat of my trousers.
He scratched a match on the seat of his dilapidated trousers.
Down it went till it reached the seat of my trousers.
"Oscar seems to have the seat of someone's trousers."
He stood up and dusted off the seat of his trousers.
The man rubbed a hand over the seat of his trousers, looked at the hand, and sat down himself.
The driver got up and wiped his hands on the seat of his trousers.