Evilclive - undercrackers from a bike ride...no you need to get sorted. Very easy for skin in that area to get 'inflamed' - so fresh shorts for all. Really... protect the under bits...... not funny riding on any uncomfortable bits !
Um, this isn't the voice of inexperience y'know. I've been doing this for 14 years now - I know you say it's very easy for it to get 'inflamed', but it's just not happening to me. And like I said, that's riding 5 days a week, 13-20 miles a day, ie decent length commuting riding.
Now, if I were doing 50-100 mile rides, things might be different - I can't comment on what I'd do or how my body would react in that situation, because I don't do it. But the shorter, commuting style stuff - no problem.
Maybe I've just got an iron backside :-)