From the Irish colloquialisms 'Sack' meaning scrotum and 'Mickey' meaning penis, SackMickey refers to a gentleman who has a bigger sack than mickey because of his tiny penis. This usually gives the appearance of a baby carrot resting on a large pair of wrinkly red kiwis.
Paddy: "I saw John's flute last night at the gym.
Sean: "Oh yeah? How was that?
Paddy: "Not great, full SackMickey on him"
Sean: "Jaysus, poor John"
1. An unfathomable moron
The word JackMonkey was origonally a derivative of "jack off" that was created in a moment of absolute frustration. The defining factor of a JackMonkey is their inability to grasp even the simplest concepts that are new to them.
I tried to teach that JackMonkey to tie his shoes but all he managed to do was get his fingers stuck in knots.
When somebody, especially bloggers, refuse to tell you their name in social ocassion, trying to maintan the aura of mystery. (After: Bond, James Bond, off course)
Tom: I'm Tom, I'm a big fan of your blog SM: And I'm Monkey, Sandmonkey..let's just leave it at that