There's this blonde who goes into an electronics shop, and asks the bloke in there if she can buy this TV. But the bloke says Sorry, we dont serve blondes.
So she goes away, dyes her hair brown, and goes back. Sorry, we dont serve blondes, the bloke says.
So she goes back and dyes her hair ginger¹, but he still tells her they dont serve blondes.
Sooooo, she goes back yet again, but dyes her hair black. Again, she asks if she can buy the TV, but yet again, she cant² get served.
Look, she says, how can you tell i'm a blonde, even tho i've dyed my hair???

Soory lady, thats a microwave!!!!