Double high kick (3.5e Feat)
From D&D Wiki
 Double high kick [General, fighter]
two kicks straight into the gut of an overhead enemy.
Prerequisite: DEX 13, CON 10
Benefit: If an enemy is 10 feet or less above you, you can use an attack of opportunity with both feet (1 attack), dealing 2d6 damage and sickening the foe.