My snow corn also always has elevator music playing in his head! Not sure what it is about snows that makes them so derpy.
You make a good point, friend.
Just for funsies, I'd like to break down the gene combination that causes extreme stupidity in corn snakes.
Snows are the combination of amelanism and anerythrism; the removal of black pigment melanin and red pigment erythrin.
My most intelligent snakes are Amels, but they tend to make impulsive choices that are not within their best interests. Escaping the night before dinner day, for example. These snakes express erythrin but no melanin.
My Anery snakes tend to be less "bright" but they are calm, deliberate in their actions, and learn patterns easily. These snakes express melanin but no erythrin.
Therefore, we can postulate that melanin is linked to a snake's wisdom and erythrin is linked to their intelligence.
A corn snake lacking melanin will experience a negative modifier to their WIS stat but they may still be very intelligent. Amel snakes make very good rogues (they already have race-based +2 DEX) and can be gifted magic users if their party doesn't mind dodging the occasional way-too-close range effect spell. They may need to be reminded to rest and to not put tomatoes in a fruit salad.
A corn snake without erythrin, then, will have a negative INT modifier but they may have a very high WIS stat. Anery snakes can be very strong clerics, rangers, and monks, and may also choose classes like warlock or druid. Their lower intelligence is rarely a hinderance when the other members of their party have complimentary stats and skills.
So what do we get if a snake is lacking both erythrin and melanin?
A Snow corn who is a bard, a fighter, or a positively terrifying sorcerer.