Lurpy

(adj.) someone, esp. male in early- to mid-adulthood, who is lanky, gangly and physically awkward

Extremely tall and skinny

To make unwelcomed advances, often while heavily intoxicated; becoming overly friendly and forward, bordering being creepy

Defines that feeling you get when you have low blood sugar, or too much blood in your alcohol system.

someone being awkward, tall, and skinny.

(adj.)used to describe someone who is very creepy and sleazy

Having everything to with being creepy, overly touchy, unwelcome in advances or presence, may include, but is not limited to, those who are heavily intoxicated.
Probably derived from the use of lurky and creepy combined, thus lur-py.

Many variations exist all with the same general implications. One can lurp, be a lurp, a lurpster, a lurp show, be lurpy, be lurptastic, or do something lurpily.