improper root

A maths-based joke that refers to working towards, but not completely achieving, getting a root. It is essentially a failed attempt to tune or woo a female.

1. "Nah look... I didn't actually root her. It was more of an improper root."

"So nothing happened then."

"Uh... nah, we just chatted."
2. "Old mate Will got an improper root last night."