what do you say to others?

The first time you do something - It's going to be a personal record!
All of my friends and close acquaintences know. I just answer their questions and acknowledge their compliments gracefully. Usually. One lady the other day told me I was a shadow of my former self. I asked her somewhat pointedly if she'd ever seen a 325 lb shadow before. More distant acquaintences get this canned answer to the question of "how are you doing it?". I tell them, "About 1200 calories per day, about 3-5 miles of walking per day.........and $25,000 worth of surgery."
The free man owns himself. He can damage himself with either eating or drinking....... If he does he is certainly a damn fool, and he might possibly be a damned soul; but if he may not, he is not a free man any more than a dog.
I usually go with a direct- "Gastric Bypass." When trying a hint of humor, I’ll throw out- "The Al Roker Diet." That mostly gets a small nod and "oh….’ Followed closely with "OOoh!!" (I love the double takes….) If they ask more, I’ll go into it. Doesn’t bother me a bit. Some WLS folks get very self-conscious and defensive About being asked. I don’t. Best Wishes- Dx
Capricious; Impulsive, Semi-Predictable