Aside from the typing trap,I have been giving this question a little thought and it could be " A graveyard full of Irishmen"! But speaking of plural and Irishmen...
Paddy was the curator at Dublin zoo. He needed to increase the stock in the Asian section so he started to write a letter to Mumbai Zoo......."Dear Sir, Could you send me 2 of you finest Mongooses" ...but that didn't sound right..."Dear Sir could you send me 2 of your finest Mongeese"... that didn't sound right either......"Dear Sir could you send me 2 of your finest Mongeeses"... Nope!..."Dear Sir could you send me 2 of your finest Mongi"... AW F**K IT...."Dear Sir send me a Mongoose, p.s. Please send another"