Okay, so everyone knows Rush Limbaugh is stupid for suggesting that someone who goes broke buying birth control is a “slut”. Birth control pills end up being a sunk cost. You don’t go on and off them but stay on them however sexually active you are. But of course it’s not true that there’s no relationship between amount of sex one has and contraceptive costs. Say condoms are about $3 each and it costs $10 a month (at the low end!) for birth control pills. That means if you have sex less than three times a month, it’s cheaper to buy condoms. If it’s $50 a month, then make that 16. $100, 33 and so on. So I suppose if one has a low threshold for “slut” then the mere fact of needing the pill would make someone so.
Naturally, slut isn’t defined by amount of sex but amount of partners. If you have sex twice a day every day with the same person, you’re not a slut and are in need of contraception. It’s also unclear why someone should be shamed (only implored to be careful of STDs) for having multiple partners if that’s really the lifestyle they want. The problem is that many religious conservatives don’t really like premarital sex of any sort and the notion that contraceptives are associated with promiscuity is just a red herring.