There’s this blonde who goes into an electronics shop and asks the bloke if she can buy a TV. But the bloke says, “Sorry, we don’t serve blondes.” So she goes away, dyes her hair brown, and goes back. Again, the bloke says, “Sorry, we don’t serve blondes.” She goes back and dyes her hair ginger, but he still tells her they don’t serve blondes. So she goes back yet again, but dyes her hair black. Once more, she asks if she can buy the TV, but yet again, she can’t get served. “Look,” she says, “how can you tell I’m a blonde even though I’ve dyed my hair?” The bloke replies, “Sorry, lady, that’s a microwave!”