19m, I can hear my mom (40f) while she gets fucked by her younger bf (19m). I think she keeps teasing me by moaning “she is getting pregnant”

19 here, my mom is 40. She is dating a black guy my age a while now, and they are extremely active at bed. I keep listening to their moans. The things my mom would say sometimes, I think she is teasing me a lot. The walls in our house are paper thin, I keep listening to her making comments how “he is very active”, “has lots of sexual needs” or just asking him “I am just a slut for you when we are in bed? You just want to be with me in the bed all day and fuck” and then laughing hard. She also asked me straight to my face if I can believe “a 19yo black guy will get her pregnant” most probably and then laughed.