Gerard Streator was spotted bending over an abandoned yellow settee with his trousers round his ankles in Waukesha city, The Sun reported Thursday.
The hotel worker was seen by an off-duty police officer at 11 p.m. "thrusting his hips" against the sofa, which was in full view next to the kerb. No one was seen on the sofa.
As the police officer yelled at him, the man fled to a nearby apartment block.
He was later arrested and charged with lewd and lascivious behaviour.
The man faces up to nine months in jail and a $11,000 fine.
In a similar case, a man is wanted by police in Varallo, Italy, after he was seen having sex with a waste bottle bin.
