ADELAIDE - Terrifying pace demon Mitchell Johnson was on a hat-trick twice as the speedster claimed 7-40 to bowl England out for 172 on day three of the second Ashes Test.
Resuming at 1-35 in reply to Australia's first innings of 9(dec)-570, the tourists were struggling at 4-116 at lunch.
Few would have expected the hurricane that was about to hit Adelaide Oval on a flat batting track.
Leading by 398 on the first innings, Australian captain Michael Clarke has declined to enforce the follow-on.
However, Australian wicketkeeper Brad Haddin had predicted on Friday night that Johnson's speed made him dangerous at any Test venue.
Johnson's ninth five-wicket haul and second in consecutive Tests moves the 32-year-old to 10th on the Australian all-time list with 221, surging ahead of spin great Clarrie Grimmett on 216.
The left-armer's initial post-lunch spell of 5-16 off five overs included an 18-ball burst that yielded 5-12.
England's middle-order batting crumbled for the third successive time in the series as the tourists lost 4-6 after being 3-111.
Australia had dismissed Joe Root (15), Kevin Pietersen (four) and Michael Carberry (60) in the first session.
The menacing Johnson with his Dennis Lillee handlebar moustache then claimed three wickets in the third over after lunch.