The title the Egg-cellent was unlocked by being one of the top 102 jadinko egg collectors during the 2015 Easter event egg collecting competition.
Unlocking the title was set up as a competition for egg collecting inside the event area. Eggs from thieving the nests, hunting the imps, and killing jadinkos all counted towards the competition. The title was originally meant for the top 100 players with the highest amount of eggs collected, but roughly 30 minutes of data was missing from the final scores. The scores were rechecked with the additional data, and two different players actually had higher scores than the previous list. Mod Jon didn't want to take away the title from two players who he already said would receive the title, so he awarded it to the top 102 instead.
This title changes according to the language of the server on which RuneScape is played, as shown below:
||[Name] die EI-nmalige
||[Name] o Ovacionado / a Ovacionada