the first video is from the Gaki No Tsukai which is a whole show and what was posted here is a funny segment of it
basically it's 5 Comedians who host the show "DownTown" and when one of their members wins a bet or something like that, they have a "Batsu Game" which means 'punishment game'. there are a couple of them on youtube with subtitles
if you think it's funny go to youtube and watch the whole show, it has like 13 segments, so you will be entertained for quite a while
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"Some say that the outline of his left nipple is exactly the same shape as the Nürburgring, and that if you give him a really important job to do, he'll skive off and play croquet... all we know is, he's called the Stig."
The Top Gear Wikiquote