Brand loyalty consists of a consumer’s commitment to repurchase or otherwise continue using a brand and can be demonstrated by repeated buying of a product or other positive behaviours such as word of mouth advocacy.
The next stage is brand idolation which starts with wearing loud t-shirts with the brand name on it and sending nasty e-mails to competitive brands.

But the ultimate expression of brand loyalty, brand idolation, is a logo of a brand tattooed on your body.

Here’s 80 well known brands, tattooed on lifelong brandidols, found on the internet.
Can’t imagine they were all drunk.