If you could fill a swimming pool with anything but water...

[Of-the-Lion]

Custard

Rationale: Its surface tension allows you to walk on it like Jesus!

 

[AnthonTheSkabot]

Some down-home hemoglobin goodness, or Citrus Drop.

 

[ThePirateMan]

Diamonds.

I'd be rich!

Edit: If I have to fill it with stuff that I'd actualy be able to fill it with:

I think I'd rather just leave it empty if I can't have water..

 

[Judgement101]

Milkshakes! That should be fun.

 

[Coldster]

Money! I would then install a diving board and jump in it like Scrooge McDuck.

 

[Evil mr dave]

I would fill my swimming pool with whores. Did I win?

 

[jbchillin]

pudding...and id have a ton of girls in bikinis come over and have the wrestle.

 

[InnerRebellion]

Birch beer. Oh my yes.

 

[Panda Mania]

I'd fill it...with LOVE!

Ok so I'd actually fill it with strawberry jelly-ish syrup. Somewhere between solid and liquid...

 

[bakutert]

i would fill my swimming pool with sprite(soda).

 

[noxymoron19]

I would fill it with one Jessica Alba in a bikini, who's pissed that she can't go swimming and needs someone to comfort her.

 

[redisforever]

What I would put in it is a swimming pool with a swimming pool inside a swimming pool that's inside a swimming pool.

Poolception?

OT: Liquid platinum. Because why not? Bit easier to sell, otherwise you'll have a huge chunk of metal stuck in the ground.

 

[Moontouched-Moogle]

United States currency. And then swim in it Scrooge McDuck style.

Money! I would then install a diving board and jump in it like Scrooge McDuck.

Gah! You ninjas are everywhere!

 

[Outright Villainy]

Play me off keyboard cat T-rex!

Basically, that.

 

[Grabbin Keelz]

liquid nitrogen

 

[KishinZero]

If it was a deep pool then i'd put in the Valve team and only let them out when they have finished Half Life 3

 

[viking97]

chocolate that is liquid at 75 degrees (Fahrenheit, never quite got the hang of Celsius)

 

[thiosk]

[HEADING=1]Mercury[/HEADING]

 

[xdom125x]

Female porn stars of my choice.
Fine, I will make it g-rated

Gold coins, that way I can test if imitating scrooge mcduck would kill me.

Or
Marshmallows