A whaledie is the opposite of worldie, meaning a person of above average weight.
That girl's a whaledie! (Mean's she is fat)
Why don't you go pull that whaledie? (Someone that is a last resort on a night out)
Masturbating at work whilst on your break.
He's going for a Master Break instead of a usual cig break.
When you're in a club and you and your friend spot a whaledie.
That girl over there is a right whale Pass the harpoon!