Runaway concrete floater

That guy's laugh reminded me of Muttley from the old Hanna-Barbera "Dastardly and Muttley" cartoons...

[ame]http://youtu.be/FdghRwWfaOQ[/ame]

Also, around the 1:33 mark of the video, does it sound like one of the guys making the video farted? Just wondering...