>>280195126 (OP)If your mom got with your father as a teen (let's say 14) and they only had sex with each other and let's say your father is 14 cm (average Western penis erect lenght) and they have an average sex drive (teen + adulthood with pregnant pause to be considered, so let's say 3 times per week), and per average the sex act lasts 5 minutes of actual vaginal penetration (ignoring foreplay and other kinds of sexual activities) and let's give an average of one penile thrust every 3 seconds (considering pauses and slowdowns) and she got pregnant at 18 and you yourself are 18, this means 22 years of sexual penetrations, with an average 3432 instances of sex, meaning about 17160 minutes of penetration, or 343200 thrusts, or 4804800 cm of cock going in and out of her vagina; in this very virginal scenario your mom has taken almost 50 km of cock in her; I've read those porn manga and I can tell tyou that, by sheer numbers alone, she has more experience in cock that all the girls on that booth panel combined due to two decades of head start on them.
She would have no problem going in there, rationally.