Title text: Shipping times vary. Same-ocean delivery may only take a few years, but delivery from the Weddell Sea in Antarctica may take multiple decades, and molecules meant for inland seas like the Mediterranean may be returned as undeliverable by surface currents.
No, don't pour water into the ocean! Haven't you heard the sea level is rising?
*fumbling with camera*
"Oh hey, well, happy birthday, future friend! As you can see I'm driving down the road so if my calculations are correct, the water that has melted off the Antarctic ice sheet as a consequence should make it to you shortly after you see this. I know you always liked rain."
