Japanese flag

When you have sex with a woman on her period and youre left with blood on the end of your penis. Then using a clean piece of toilet paper press your penis bang in the middle of it leaving a red circle.

Or if you have a large length, you could always use a bath towel and fly it from your TV aerial.

There's alsorts of japery to be had when "the reds are at home"

Best laugh you can have is doin the Japanese Flag with a bird who has "the painters" in.

Whip yer cock out after a few dips in the tin and place the end of your length slap bang in the middle of a clean piece of toilet roll.

HEY PRESTO!!!! 1 Japanese Flag.

by L4TW August 22, 2007

Japanese Flag

A bloody and used maxi pad.

I'm sick of seeing Japanese Flags in the trash can.

by LeeChan January 20, 2004

Japanese Flag

A post diarrhea, somewhat chafed rusty bullet hole

Last night's Ruby Murray has got me sitting on a Japanese Flag today

by Slim_Jim February 27, 2009

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 16, 2008

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