Other mistake: When Timon meets Rafiki for the first time, Rafiki is hanging upside down, yet his beard is not affected by gravity and remains pointed upwards.
Other mistake: In the credits, Zazu, the hornbill that is adviser to King Mufasa, is incorrectly listed as "Zasu".
Answer: No, this would be a reference to link this film with the first, as Timone and Pumba scare off the buzzards that are surrounding Simba and Pumba says "Bowling for buzzards!" Hence "Bowling for porcupines..."