Makeout point

One Friday night, a policeman saw a car parked up at "makeout point."

Shining his flashlight in the window, he saw a young man fidgeting in the front seat glancing at his watch and a young woman sitting in the back seat and reading a magazine.

"Is everything alright?", he asks.

The young man says, "Yip, everything will be fine."

"Excuse me once again, son" said the cop¹, "but how old are the two of you?"

"I'm eighteen, sir, and" (checking his watch another time) "in ten more minutes, she'll be eighteen too!"