If it looks like a duck...

A completely inebriated man walked into a bar and, after
staring for some time at the only woman seated at the bar,
walked over to her, placed his hand up her skirt and began
fondling her.

She jumped up and slapped him silly.

He immediately apologized and explained, "I'm sorry. I thought
you were my wife. You look exactly like her."

"Why you drunken, worthless, insufferable son of a bitch!" she
screamed.

"Funny," he muttered, "you even sound exactly like her."