How do you read smut/bl like its newspaper?

Im genuinely curious how do you guys read it when theyre doing the boombayah in the story like its nothing I did read some smut and bl and they got me squealing even when im reading it in public. Like in the story the couple is doing a physical workout on the bed and I cant help but just smile and scream. Are yall just generally used to it and dont react the same way as I do too?

Also, share your experiences reading them in public if you wld like. How do yall pull off the best poker faces while reading unholy stuff? I need some insight (=・ω・=)