This video of a Korean English teacher explaining choice bits of slang and expletives had me snorting with laughter:
My favorite ESL-related clip of all time, though, is Harold Ramis’s opening scene in Stripes (I can’t believe it’s almost 30 years old – I remember watching it at the drive in with my parents):
Son of Bitch! Shit! – When you care enough to send the very best.