Jason Kottke has posted a seemingly legit video on his Kottke.org site with the only introduction possible: "You wouldn't think a Korean man teaching his class how to swear in English would be so funny." He also praises the instructor's mannerisms and ability to channel "Goodfellas-era Joe Pesci." And a warning: It has lots of—surprise, surprise—obscene language.
(More cursing stories.)