What do you call a bond...?

What do you call a bond...?

*Note: This actually happened in my classroom just now

Professor: What do you call bonds issued by a foreign entity in the canadian market, in canadian currency?

Students: ...

Professor: Maple Bonds. What do you call bonds issued by a foreign entity in the japanese market, in japanese currency?

Students: ...

Professor: Samurai Bonds. What do you call bonds issued by a foreign entity in the US market, in US currency?

*One student slowly raises their hand, looks the professor dead in the eyes, and says loudly:*

Obesity Bonds?