His eyes blaze - it's excuse enough, and moreover if Legolas had not wished to enter, then it was more Mithrandir's fault tan perhaps he had known. But the question, so nonsensical does it seem, is enough to delay anything further that he may say or do.

"For the third time had our feast been attacked - by a dwarf, or so it seemed. A spell of sleep had been cast upon it." As Legolas should well know.