So for the 1st 38 years of my life I never encountered chaffing. Now that I haven't smoked for 2.5 years I put on 5 kg and sometimes, maybe it's heat or diet or my underwear or I-don't-know, but sometimes (it sure seems to be heat related) I get a bit of what must be 'chaffing' on two very small bits of opposing bum cheek.

I've seen a disturbing photo of Gary applying something to his undercarriage prior to an event. Is that my future? Am I destined to becoming an axle greaser? I'm just under 70 kg. How can my buns-of-steel do this to me?

Any tips?