puerile self-gratification

The below is a puerile joke I made a couple of weeks ago, and one which amused me greatly. G originally emailed me to ask about electronic visas ("elec visa" as the subject heading) to Oz, wanting to know how long they took to process.

There's nothing like self-gratification...

From: G
Sent: Monday, November 07, 2005 7:51 PM
To: A
Subject: Re: Elec Visa

BTW. Y laughed so hard when I read this to her that it gave her the hiccups.

Dear G,

I've edited the subject heading below in such a way as to convert the content of your email into a suggestive – bawdy, if you will – item.

FYI.
A

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From: G
Sent: Monday, November 07, 2005 5:06 PM
To: Y
Cc: A
Subject: Re: Erection cream

Is it instant?