This papercraft is a Homes Smell Ya Later, from MS Paint Adventures webcomics, the paper model was created by aiko-chan14. Karkat combined his sickle with The Thresh Prince of Bel-Air DVD to produce Homes Smell Ya Later upon entering the medium.
The name is a direct reference to a line in the Fresh Prince of Bel-Air theme, which is actually "Yo homes, smell ya' later!" In The Thresh Prince of Bel-Air, Troll Will Smith plays a new cadet amongst the ranks of the threshecutioners, sassin' up all the bluebloods in his flaysquad. [Source: wikia]
You can download the papercraft model template here: MS Paint Adventures - Homes Smell Ya Later Free Papercraft Download