To be honest, the first one does look even older than three or three and a half months. Closer to four and a half or five months old, even if it is a close up. But the fetus does have to be at least 4 months old because they don’t start sucking their thumb until 4 months, which he/she appears to be doing.
Thinking back to biology 453: it’s definitely not in the 1st trimester because it’s already developed (ie it has a nose, limbs, etc). I think that’s the joke- a close up wouldn’t make a difference if it was an embryo (under 12 weeks). Stupid Louis for not knowing that right? No! Stupid lamebook for thinking that we’re all child development experts like Jenni’s dad!
Yeah the 1st one is more than 3 months old. That baby looks older than my son did at 21 weeks. But about the same age as my nephew looked at 21 weeks. And they thought my baby would be huge. It looks roughly 21-22 weeks which is nearly 5 and a half months. So it’s definitely not his.