2. Lightweight
Gwaine was very intent on getting his best friend drunk. Gaius insisted he was a lightweight-should be easy.
Key words? 'Should be.'
After his seventh tankard Merlin was still sober as the king in a council meeting and Gwaine was already losing clear sight. He cursed Gaius, the physician probably thought it would be funny to see Gwaine lose so spectacularly at the one thing he excelled at (other than fighting).
Merlin loved this new liquid-evaporating spell.