Paddy Irishman enrolls in a college

He meets with the dean who tells him,

"Here, you'll learn our 4 main subjects: English, maths, history, and logic."

"What's logic?" asks Paddy.

"Well let me give you an example. Do you have a lawn mower?"

"I do."

"Well using logic I would assume you have a garden."

"That's right."

"And because you have a garden, I would use logic to assume you have a house."

"I do own a house."

"Well because you have a house, I would use logic and assume you have a family."

"That's right, I do have a family."

"Using logic, I would say you therefore have a wife, which means you're a heterosexual."

Paddy was astonished and he said, "Wow that's incredible! You could tell I was a heterosexual just by asking if I had a lawn mower!"

Later, Paddy was at the pub with his friend Mick. Paddy told Mick about the logic course.

"What's logic?" Mick asked.

"Well let me give you an example. Do you have a lawn mower?"

"No."

"Then you're a faggot."