The act of being asked to apply sunscreen on someones back and responding by ejaculating onto their back and rubbing it in.
Tom: Wow, you're back is so burnt! How come you didn't put on any sunscreen at the beach?
Corey: I gave Alex the sunscreen to do it but the bastard sydney sunscreened me!
Corey: I gave Alex the sunscreen to do it but the bastard sydney sunscreened me!
by The F3llas February 12, 2012
Get the Sydney Sunscreenmug.