Karlnap

Karlnap is the slash ship between Karl Jacobs and Sapnap from YouTube fandom.

Canon
The two have met up in real life before. They are also both active members of the Dream SMP. They became engaged on the Dream SMP after Karl's debut and having opened their relationship to Quackity. With the help of Punz, the two built a wooden structure resembling the Eiffel Tower near Skeppy's house for their future honeymoon.

Fanon
The ship is very popular in its fandom, even being more popular than rival ships such as Dreamnap and SapNotFound. Karlnap was mainly fueled by them canonically being in a relationship on the Dream SMP along with their meetups in real life. There is plenty of fanart with the two, typically relating to the Dream SMP.

Variations

 * Feral Boys refers to the ship between the two, Dream, GeorgeNotFound and Quackity
 * Karlnapity refers to the ship between the two and Quackity