Lazy Log 

A semi erection of the penis, the beginning stages of an erection, when the penis is starting to become erect but is still pointing down and feels heavy.

I've had a Lazy Log all day, I need to get laid soon.

Lazy Log by Bird Brain October 21, 2012

Lazy log 

One who wakes in bed but lays there for hours.

I woke up this morning and I slept like a log, and layed there throughout the day. Like a Lazy log

Lazy log by Yoshi10116 June 7, 2018