tempera tantrum
Refers to a noisy/
voluminous outburst of frazzled-nerved emotion involving watercolors, either emanating from a creator/observer of a messy spill/
soiling involving said paint, or the resulting preposterous canvas-creation (think,
abstract art) when the "genius painter" supposedly experiences a "creative epiphany" and totally "goes wild" with his colors in an effort to supposedly illustrate his inspirations, emotions, Heavenly-based vision, etc.