Why would I want to make an excuse for men who can't be bothered? Why?? I'm a woman. I find disrespect of women disgusting.
I would rather dot every i and cross every t to make bloody sure that there are no situations where there was 'reasonable belief in consent'. Not because I want rapists to get away with rape or to offer their lawyer another line of fuckery defence but because I genuinely believe this happens and do not see how anyone who reads mumsnet can believe that it doesn't.
if in doubt ask
This rests on the assumption that there will always be some tangible sign that women don't want to proceed. The sad reality is occasionally women do their best to seem like they're enjoying sexual contact when they're not. That will affect what reasonable beliefs the man will hold about what they want. It will affect the presence or absence of doubt in his mind and without the presence of doubt, he can be forgiven for not verbally checking.
Many people on the thread have said that 'enthusiastic participation' should be the indication that consent is present, with verbal consent asked for if in any doubt. There's a problem with that when women fake enthusiastic participation, without perhaps realising that some men assume enthusiasm for what's happening now implies consent for penetration. You wouldn't believe people can be so clueless (on both sides) but it can happen. Vague guidelines aren't enough.
I'm saying this because I would like to be sure it didn't happen. Not because I'm interested in excusing lads who can't be bothered to respect women. If there was spelt-out, non-subjective, cast-iron consensus about they should be doing to obtain consent I would revel in being able to beat such men over the head with it, metaphorically speaking. Not least because my friends would have been just the sort to pretend they were having fun when they weren't. And please note, I am not talking about the situations that have been mentioned upthread when women freeze because they are being raped or during sexual contact that they've been coerced into.
But in the context of a one night stand or first time sex, surely you would think the man would take the time to check?
I've known young women with babies who were conceived through consensual sex in the toilets of nightclubs and they didn't necessarily know the person's name. It defies 'surely you would thinks.' I'm not talking about the people who think much beforehand and who find out their sexual partner's name and go and look for a proper private place to have sex. I really wouldn't assume anything except about very casual sex between some people except that if a man doesn't want to rape someone, he will stop if he becomes aware of that. I wouldn't assume said men will 'surely' do anything that he ought to do off his own bat. If that's infantilising them I don't care - it's realistic. Some of them need telling.
'