Lǎobǎn yī lái, tā jiù liūzhī-dàjí, bújiàn zōngyǐng.
The moment the boss arrived, he slipped away and was nowhere to be seen.
Tips
memory
溜 means to sneak or slide; 大吉 means great luck or good fortune. The humorous idea: slipping away is your best 'lucky' move. Imagine someone gleefully sliding out the back door, congratulating themselves.