Okay people help me out here....

At work the other day we had an iced clear drink that I absolutely loved. I'm trying to google it to figure it out but nothing is coming up... This is the best way I can describe it...

- It was clear - I thought it was just water until I had a sip
- it had lots of ice in it
- it had cubes of watermelon in it
- it had lots of mint leaves in it
- it was very sweet

Ideas? Suggestions? When I google it I come up with drinks of blended watermelon and iced teas very dark in color.... I must have more....
If I ever see the caterers again I will ask but not sure when that will be....

can't stop listening to these guys - borderline stalker behavior here...
Just got tickets to the show in November - can't wait...