Highly detailed vintage retro vinyl sticker illustration of an utterly exhausted owl perched on a gnarled branch, heavy dark bags drooping under half-closed weary eyes, slumped posture with shoulders sagging, clutching a steaming coffee mug in one talon. Intricate feather rendering with layered scalloped patterns across chest, fine parallel hatching on wings and head tufts, detailed facial disc lines radiating from eyes, sharp curved beak, distinct ear tufts drooping with fatigue, textured branch bark with knots and grain detail. Steam wisps from the mug rising in tired curling lines. Bold curved arched text "FUNCTIONING" above the owl following a half-circle path and "ON FUMES" curving below in matching half-circle, in bold condensed slab serif font. White background, professional black ink illustration, vintage engraving aesthetic, no border, no frame, isolated illustration centered composition.