It’s time to watch highly-trained martial artists strip down to their skivvies and hop on a scale so we can judge their weight loss techniques, so click on the video box below to make your day complete! Yeah!
From Urban Dictionary (for the record):
Skivvies: Slang for underwear, generally mens trunks or briefs, but can also be applied to singlets or undershirts. Can also be applied to swimwear or other skimpy items of clothing.