Jacket on the bus
When someone on the bus uses a jacket to cover their hand so they can give you a hand job without getting caught.
He used his jacket like it was a disguise. I knew he was giving me a hand job.
She covered her hand with a jacket like it was a magic trick. I knew she was giving me a hand job.
He had the jacket on like it was a shield. He was giving me a hand job and didn’t care.