1. What's your In-Game name?:
_KingMC

2. What's the rulebreaker's In-Game name?:
STN_Sam

3. What rule did he/she broke?: 
Admitting to Duping/Hacking
*Possibly Duping* - as he does admit to it, then calling it a joke after.

4. Screenshot(s)/Video(s) for evidence: 
(Screenshot/video)

https://youtu.be/8vfW90nxB9M - Video, for proof of not faking it.
http://prntscr.com/nldvkd
http://prntscr.com/nldvo7

Extra: NotValidTV also does have screenshots.
 

Sufficient Evidence. 
+1