On their last night before graduation, they ate and drank wildly at the bar until dawn.
Tips
memory
胡 (hú, recklessly) + 吃 (eat) + 海 (hǎi, sea — here 'sea-sized', huge) + 喝 (drink) — 'recklessly eat, drink by the seaful'. Both 胡 and 海 boost the verbs to gluttonous scale.