An Alliterative Oxymoron

Scientific systems sometimes seem strangely simple, so say I. Complex calculations can cause casual, concentrated conversations. --- Sometimes I can be STUPIDLY SMART. I literally love laughing at little, light Limericks. Finally feeling fantastic following Friday’s frenzied finish. --- Sometimes I FEEL SO GOOD IT HURTS. Positive people perpetuate pleasant personalities. Obviously oblivious of often onerous outcomes. --- Sometime I WORRY that I live a WORRILESS life. Typing tantalizing text to terminate tenth line. --- I SOMETIMES ALWAYS comply with rules.