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Look out Lolo Jones, the Internet has a new athlete that's giving you a run for your money.
During the recent World Junior Championships in Barcelona, Australian runner Michelle Jenneke revealed an unusually sensual warm-up. Cameras were rolling before Jenneke ran the 100m hurdles, and let's just say the bouncing dance routine captured their attention.
We're not sure what's better -- the fact that Jenneke came in first, or the girls' reactions behind her. Regardless, we've compiled some of the best moments in the gallery below, including a bonus shot from the unfazed security guard.
Who has the best reaction?