Portmanteau of absurd and observation. Absurvations are irrelevant, often inane, comments or thoughts.
Where 'observations' can be relevant and useful, absurvations are pointless (though perhaps funny).
Sally: "If they made the sidewalk completely of hardened
chewed-gum pieces then when people spit their gum
on the sidewalk it wouldn't look ugly."
James: "What a weird absurvation."