1. (Noun) In the context of World of Warcraft, the buff caused by a paldain using Divine Shield when at very low HP and about to die. This is often followed up by multiple casts of Holy Light. Incredibly annoying due to the fact that Divine Shield causes the paladin to become totally immune to everything except two other classes' special pally-bubble-popping abilities, AND that the paladin can still deal damage and heal himself while it is active.
2. (Interjection) A statement often screamed in response to a fucking pally bubble.
1. He was so close to dead, but then he popped his fucking pally bubble and killed me.
2. FUCKING PALLY BUBBLE!!!!!!