I got to witness Applesauce Day and Lerroux in my old accounts, but I never really touched my account in the Lerroux one and I only opened it to check what the prank was lol. I wish I was around during the Everyone-Is-A-Mod prank, it would have been fun. My favourite so far is Applesauce Day. <3 Especially reading the one bio saying "I love roleplaying", into "I love buffalos" I laughed so hard omg. Ok I'll shut up now.
I don't know of any suggestions for a prank, but I hope they have one. If they don't it would be disappointing. :(