This is a humorous way to tell others - you're not really into details about how to compose a home appliance or configure specific settings on the laptop.
Who cares? You can still have a zillion followers in Instagram or drive your facebook friends crazy with the newest stuff you publish.
Get the T-shirt, show the world you have a healthy sense of humor about yourself. They will understand it anyway: there's something cool about you.
This quality T-shirt with an embroidered (not printed!) text is very lively and eye-catching. It differs from a regular printed label in its quality, durability and its trendy and expensive appearance.