Smuggle coral home from Vanuatu in your foot.
Dismiss infected blister on the back of your heel as being from the flipper strap, rather than from sharp coral.
Continue working as a mechanic, wearing workboots, limping around in the Aussie summer.
Tear your calf due to limping, ignoring the fact that every cut you have is getting infected.
Treat the swollen calf with ice and rest over the weekend, allowing the now blood-born staf infection to set into your torn muscle fibres.
Finally arrive at a doctors, six weeks after returning, who sends you immediately for surgery, slicing through your calf to the bone.
Spend a week in isolation at the hospital as doctors pack, clean, and repack your sliced-open calf muscle with gauze bandage, while copping a few liters of penicillin via IV.
Yeah. Don't do that.
But beer?
Uh...
Assume you know more than you do. So when you find your (rather conmplex) ginger beer at 1.005, assume it's nearly the same as water is (relying on existing knowledge rather than re-reading the recipe) and therefore must have some weird mutant infection, and tip it all down the toilet without even tasting it.
Don't do that.
(currently slurping down BM's Centennial Blonde. I got better...)