How to get seating in a full restaurant

So my cousin who lives in West Africa told me this and I thought it was worth a share lol. He decided to take his significant other to a restaurant one day and upon arrival, the restaurant was full with no available seating. They told him it would be between 30 to an hour wait before anything would be available. So he tells his lady, "watch this." He takes out his phone and starts to talk loudly, "my friend I see your lady here with another man!". She is sitting in the restaurant right now with the dude. Ok but hurry." Not even a minute passed and 3 tables became available suddenly. Ha! Lol.