Nicholas Clark was twice on target as unbeaten Queen of the South crushed 10-man Forfar 5-1 at Station Park.
Clark headed in the opener after just five minutes and they doubled their advantage after 21 minutes when Forfar's Mick Dunlop was sent off for a foul on Derek Lyle and Ryan McGuffie rifled home the spot-kick.
The home side pulled one back in the 25th minute, Gavin Swankie netting from 12 yards, but the South restored their two-goal cushion just two minutes later through Mark Durnan's right-foot shot.
Clark struck his second in the 49th minute and David Hopkirk finished South's scoring spree in the 81st minute to send Forfar tumbling to their fourth defeat in five matches.
Table-topping South have now won 10 games and drawn two.