Armpit advertising

 Congestion on Tokyo trains is not a myth.

They really do cram as many people into a carriage as they can during peak travel periods.

Which is why the utterly ridiculous Japanese idea of armpit advertising may not be so ridiculous after all.

Japanese ad company Wakino is reportedly paying models $69 to expose their branded armpits during peak hour.

Classy? Not really.

Noticeability? Absolutely.