Monkeying around, and then-some.

He had a mysterious bulge under his T-shirt, and was stopped, searched and detained at Mexico City’s international airport.

Whatd did authorities find?

18 tiny endangered monkeys in a girdle he was wearing.

The 38-year-old man arrived on a commercial flight from Lima, Peru, when authorities noticed the bulge and conducted a body search.

He was carrying the 6-inch titi monkeys in pouches attached to the girdle. Two of the monkeys were dead.

The man was arrested on charges of trafficking an endangered species.

(He told authorities he was carrying the monkeys in a suitcase but decided to put them in his girdle “so the X-rays wouldn’t hurt them.”)