Out training this morning and i'm keeping the effort around 70-75% MHR and enjoying the ride. I see another rider up ahead and slowly but surely overhaul him and as I do so give out a cheery Good Morning. I get a grunt back so I say alright? and he replies with a very surly yeah. OK I thought don't say anything just carry on. About 200 yards further on there are two horse riders and as I get closer to them I look behind me to check out for any cars before getting out wide and this other guy is on my wheel. Get past the horses and after another 50 yards he goes past me, without saying a word. This is where my reactions may differ from most others. I shout out you're 'aving a laugh mate and as he gives me a backward glance I stick it in a big gear and give it everything for a 100 metres then keep it going as best I can. A look at the HRM and it's gone up to 174 bpm and my MHR is 176. A mile later and my HR has steadied @ 168. Within a couple of minutes I got within a mile of home and eased off to warm down. Never saw him again. Is that bad form or what?