"Disco" joke

There was a disco at a local university and a fella asked a girl from Sweden to dance.

While they were dancing, he gives her a little squeeze, and said, "In Australia, we call this a hug."

"Yaah," she replied. "In Sveden, we call it a hug, too."

A little later, he gives her a peck on the cheek and said, "In Australia, we call this a kiss."

"Yaah, in Sveden we call it a kiss, too."

Towards the end of the night, and a lot of drinks later, he takes her out on the campus lawn and proceeds to root her.

Lying together afterwards, he turns to her and grins, "In Australia, we call that a grass sandwich."

"Yah, in Sveden we call it a grass sandwich, too, but we usually put more meat in it."