japanese flag

When a female has her period while wearing white pants or skirt.

When she bent over to get her pen, the boys were treated to her japanese flag.

by blarg September 8, 2003

Japanese flag

What you call your sheets after you rail a girl so hard she bleeds all over them.

I made that girl buy me new sheets after she turned mine into Japanese flags.

by Lil' Bandit January 13, 2008

japanese flag

1. when a female has her period on your white sheets

2. when you fuck a virgin and she bleeds on your sheets

that bitch bled on my sheets so i hung it out the window

by R()$$ December 26, 2005

japanese flag

A sore red arse

Last nights vindaloo left me with an arse like a Japanese flag!!!

by Chimp Boy July 29, 2003

Japanese Flag Syndrome

The sickness where you spend most of your time sitting on the toilet, usually the day after eating spicy fast foods.

Joe called in sick to work, said he had an extra spicy indian last night and his ass now looks like the Japanese flag.

Ah the old Japanese Flag Syndrome then? Rough day ahead for Joe!

by defunkt October 1, 2011

making a Japanese flag

A much classier way of saying "on the rag", making a Japanese flag is the process of taking a white sanitary napkin and putting a big red blot in the middle of it.

Jacob: Dude, what crawled up Linda's ass today?

Robert: She's making a Japanese flag.

Jacob: Ohhhhhhhhhhh....

by tunnelr@ September 28, 2009

japanese flag week

N., referring to that delightful week most women expel from their uteruses a lining consisting of blood

Yeah, she's being pretty assie she must be celebrating Japanese flag week.

by Stew Pedasso October 31, 2003