I think I would not have considered it absurd if I was attracted to people with hair at shoulder length. But being motivated by it qualifies.

If you could not stand any kind of sauce when you didn't have a shower yet I would consider absurd.

If you got headaches from the air shifts only in Rome, that would be impressive.

So I guess absurdity is just a multiplicative component of "motivation" times "hair". If there are two associated factors but no seeming reason for it, then it is, quote: Absurd.