|Yes, he learned it from his mama|
Children are not born with a palate to LOVE vegetables and other healthful foods. Many times they are bitter and may smell funny. This is actually a protective mechanism so that we do not ingest poisonous foods (which are often bitter and smell funny). But with proper training, we can develop a taste for these foods. Training starts with observation (we are truly just wild animals with technology).
In my line of work, I am frequently asked "How do I get my child to eat healthy?". My answer? Eat healthfully yourself! Even uttering the phrase "I hate green beans" can cause your child to avoid them for many moons (even a lifetime). For me this is going to take practice around my own soon-to-arrive little one (I hate cooked green beans).
Even if you do not enjoy a food that you would like your child to eat, take a few bites. No, you won't die (unless you have an allergy, in that case please DO NOT take a few bites).
I also hear all the time, "You just wait, it's not that easy". I believe you, I'm sure it's not. But I can guarantee you I WILL eat green beans around my babe. Who knows? I might like 'um.