This is one American dude you can't get enough off. If you've ever been on Chatroulette and met someone who doesn't make any sense and want to watch what others go through, this is the guy you should subscribe to. A complete one man show, this guy does what he intends to really well.
If you love watching pranks on YouTube, then these guys are what I call an "organized prank squad". Run by Brian and couple of his friends, pranks, social experiments and plain 'whatever' is what they do. They started in 2013 and got to a million subscribers in less than a year. You know they mean business.
These guys are veterans in the field and cater to a large crowd, from hard core gamers to casual movie watchers. You know these guys made this channel out of pure boredom, but as you know, nonsense can be funny. Sometimes.
One of the most subscribed channels on YouTube, nigahiga is mostly a one man project run by Ryan Higa. This channel is all about parodies and funny how-to videos. If you're into that, check this guy out.
If you want to watch middle aged men pulling off the funniest pranks ever, subscribe to this guy. Pranks are always on his agenda and with his crew he plays his part really well. Watch it to know what I mean.
Half of the people on this list are just out trolling mankind. This is one of them too. The difference with this channel is that they try to irritate the living daylights out of their subjects.
BadLipReading is one channel that you'd love to spend some time on if you're just sitting in front of your pc wasting time. They take lip reading to a whole new level and do it for TV shows, sports, movies and music.
Jash is what you get when Michael Cera, Sarah Silverman,Tim & Eric and Reggie Watts make comedy video group. Each of these comedians have their own videos completely autonomous from the others but under this title. If you're fans of these artists, you should definitely be checking this channel out.
BriTANicKdotcom is NYU grads Brian McElhaney and Nick Kocher out making videos to entertain themselves as they put it. These guys have really well written scripts with good jokes that you could use around your friends. Most of their stuff is really short and is the best to watch on your mobile to kill some time.