Was able to find an eBook of the official black and white to screenshot (thank you library!) and finally settle my hunch that the more widely available full color scanslation of this line is very likely a mistranslation or pulling something out of nothing.
Sure, no translation is perfect and some may judge the official VIZ for some changes such as using Hercule instead of Mr. Satan (which this translation acknowledges in its character intro page) but, when the interpretation varies to this extent, it's suspect. I've mentioned before that the timeline doesn't add up with this popular placement of Goten's conception, as he is born in the same year as the May Cell Games and would need to be born two months premature to fit into the last possible moment of December. Assuming the Dragon World doesn't have mysterious new months ala "Smarch" in the middle of summer or something...
This line still remains one of the biggest fandom misconceptions and it's probably not helping that one of the easiest to access scanslations online at the moment corroborates it, not to mention everyone wink wink nudge nudging at the fact that Goku and Chi-Chi have Gohan leave the house during that week.
Anyway, sorry, had to get this out because my brain suddenly decided now to maybe check the Libby library for manga. I might try to hunt other little nitpicks in the scanslation that bother me less so, but don't worry, the usual gay lizard programming will return.
