I know that you’ve been wondering what kind of undergarment did the ancient Romans wear. Good news! Because I’m here to tell you; They wore a simple t-shaped cloth called a, “subligar”. “Subligar” translated means, “to be bound”.
The diagram below demonstrates how a subligar is worn.
“si pudor est, transfer subligar in faciem”
translated — “If it’s shameful, then put your subligar on your face”