Option 1:
Your Space is as {adjective} as a/an {name an animal-or make up an animal}.
By the way, you were never in {name an 80s movie}. Liar.
I'm sorry if I seem a little out of it, I've been drinking alot of {household cleaner} lately...not really sure why.
{plural noun} {color} {historical figure}
{Your name, if you want}
Option 2:
Your MSN Space is a {adjective} {aquatic animal} of a website.
I noticed you have propensity for {adjective *optional*}{verb ending in ING}. Might I suggest {name}'s House of {plural noun}, you won't be let down.
Oh, and {item that may be purchased}...just went on sale for {price}...get em while they're hot!
{emotion} {Star Wars character} {internal organ}
{Your name, if you want}
Option 3 (if you're feeling especially random):
Hey, {plural noun} {color} {historical figure}.
{Musical instrument}-{number} {type of aircraft or boat}, {type of fruit} {mythological creature} {asexual name}.
{Emotion} {Star Wars character} {internal organ}.
{Superhero}, OK?