When something (expectedly) goes horribly wrong because of someone's stupidity. Usually, just one person in the room 'Stolars' things up all the time. Synonym: Cursed.
"Oh, there he goes again! He Stolared it! There's no fixing it now." (as a kid backs his car up into a fence.)
"Don't touch it! You're gonna Stolar it. Let me handle this instead."