Oh Lordy Lordy! Not a mean snake!
Honestly though, what if the next one he gets on purpose has an attitude, then what? Just pawn it off on someone else and get a new one?
Waiiiit a minute, he wants a large long lived snake that could possibly be "mean" and he doesnt live on his own? Getting an animal is a commitment and getting a large snake that lives and requires as much as what he wants is seriously large commitment, imo you shouldnt even think about "stepping it up" until you have a home all to youself with no risk of getting kicked out or forced to move etc.
ˇERMAGHERD A DERK!