with nowadays highly influence from porn, ppl tend to be creative when time to have sex

to name few:
costume (nurse,student uniform); sex toys; sex enhancement pills, bondage; doing sex in public; food sex etc

definitely not all people into this kinda thingy but for sure this kinda sex leaves a good memory in you

its like ... eg: I dont really remember what i did during sex last week in bed but remembered all when having sex in school library back 15 years ago