(click ad, via)
Underwear for the Ultimate Tool.
Tradie is Aussie slang for blue-collar worker, and Tradie® makes skivvies specifically not for the noodle-armed Aussie Metrosexual—so they're probably all wearing them under their skinny jeans. Maybe it's the angle, but it don't look like there's much of a tool there. I suggest he instead don a pair of these package-plumping Unno briefs. More men's underwear ads here.
Ad agency: Wilson Everard.