I didn't think of this at first, then wasn't sure if I wanted to post this.... but the very first negative response I got was when I just started becoming interested in collecting knives; and had no clue about quality.
It was the first day of High School in what I believe was the start of my Junior year. I called my then best friend and asked him to meet me before school started. I had a cheap imitation SAK Huntsman that I wanted to give him as a gift. I had one and liked it.
His response was pretty bad.... He called it a weapon, and said he couldn't possibly bring it into school with him. (This was back before schools went insane with those zero-tolerance policies. This was in the early '90s. Back when non-locking pocket knives were still seen as tools). He then said he'd have to ask his parents for permission before he accepted it from me. (He's Asian, so I understood). I was confident his folks would easily realize this was just a gift. Nope! He came up to me the next day, and said they refused to let him accept a "weapon" as a gift.
I was left with a feeling that the whole incident was just retarded. But since he was a friend, I bit my tongue. The friendship only lasted a couple of years, and ended soon after Graduation.