Sleeping in until noon on weekends is a kind of happiness.
Tips
memory
贪 'to be greedy for' (also in 贪吃 'gluttonous', 贪玩 'addicted to play', 贪杯 'fond of drink') + 睡 = 'greedy for sleep'. Lighter, more affectionate tone than 嗜睡, which can be clinical.