What is Young One?
1.
Term of endearment or affection used for someone significantly younger than the speaker. Particularly useful when the younger person has been acting in a superior way and needs to be reminded that he really is still young.
Comparable to the Star Wars phrase "my young Padawan"
You don't know what you're talking about this time, Young One.
See 
2.
Irish 
"Would ya look at the state of that young one! She's dressed like a fuggin' hoor!"
"Me young one's gotten herself up the pole."
See 
Random Words:
1. 
A mintcident is when a packet of mints are opened but instead of staying inside the packet, the mints are shot out by the force of the p..