Swimming in the Milk
Everyone knows what this means. There really is no need to explain. If you dont know what it means you are a crusty loser.
Liddy doesnt know what swimming in the milk means therefore he is a loser.
Swim in the Milk
To engage in money making activities. Why would someone swim in the milk? Because milk makes cheese. What is cheese? Money.
Jimbo is on the grind. He must swim in the milk.