Drunken mistake

A drunk walked into a bar and, after staring for some time at the only woman seated at the bar, walked over to her and hugged her.

She jumped up and slapped him silly.

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

"You worthless, insufferable, wretched, no good drunk!" she screamed.

"Funny" he muttered

Spoiler:

"you even sound exactly like her!"