"It's that time of the month" or "Her monthly visitor is around" & the like are common excuses we make for the female folk when they exhibit certain bizarre behaviours like being outrightly rude or stubbornly sentimental or extremely lazy. Of course, that is referring to the hormonal surges that are part of the normal body function of a post-pubertal female.
It is often assumed that only the femalefolk have hormonal surges & bizarre hormone-mediated behaviours. That is just very wrong. Some hormones of the adrenal gland peak & drop in concentration on a daily basis in both sexes of all ages, affecting mental judgement, blood-sugar level & even resistance to infection. The behaviour of males show a certain cyclical variation from month to month. There are times when they are quite sentimental & at other times, they are just...boys-aloof & uncaring. Some feel the need of a 'significant other' more at certain periods while others have an increased/decreased desire for sex. All these variations from the normal behaviour bear tell-tale signs of hormonal...sex hormone variations. Does this mean men also have a monthly visitor? Definitely, but it doesn't make it's presence felt as visibly as that of the female species that likes to stain their underwear(But some guys soil their nightwear). So when a guy yells for no just cause, he might just be having a very bad case of high serum-testosterone i.e. it's his own time of the month. LOL.
