Why do guys say this?

when guys are being stupid and you tell them how to do something its nagging... unless you talk to them like their a two year old and pretend you are dumber... but when they get hurt they act like a baby .... and when you get hurt... they tell you to suck it up and tell you to be a big girl... its so stupid... because one time i got hurt pretty badly when we were wrestling and he told me that didnt hurt and it did really bad... but he told me to suck it up ... however when we were wrestling another time and he hit his hand somewhere and got a scratch he got so mad and angry at me and kept whining about it all day... i had to say stuff like "does it hurt really bad" and it pissed me off that i have to talk to him like a little boy but he would never ever do that if i got hurt...it really pissed me off... he got mad at me coz i tried to lok at it and accidentally touched it and he snapped at me... he pissed me off so bad that i was like" its only a scratch you sissy!!" and i told him he should just put medicine and stop whining and he left because he was saying i was naggy!!! it pissed me off even more!!! i dont get how he calls me naggy when all he does all day is complain about his work and friends and i have to listen to it when if i say anything about work hed say im nagging... i dont get it...why do men accuse women of nagging when they are such complainers themselves...