Competitors wearing little but their underwear smile and cheer as they finish the ninth annual Underpants Run, Thursday, in Kailua-Kona, Hawaii.   (AP)

Competitors wearing little but their underwear laugh as they briefly strike an 'Ironman' pose during a break for stretching during the ninth annual Underpants Run, Thursday, Oct. 13, 2005, in Kailua-Kona, Hawaii. About 100 men, women and children ran in the mile-long event, which crossed paths with the start and finish areas of the considerably more serious Ironman competition, which will be held Saturday. The Underpants Run, originally begun to poke fun at Speedo-wearing Ironman competitors, is now a fundraiser for a local charity.    (AP)

poke fun at :  （取笑）

fundraiser : （筹资者）