OK at 3 years old I fully realise that alot of children have already found this one out for themselves and it will only be a matter of time before mine does! On sunday we were at my mils and we noticed a stairgate over her kitchen. (She's always been anti stairgates. Rather surprised and mil said they were for her boys (her puppys). Anyway later on ds1 asked me how to open it. I refused to explain and told him they're to keep little boys safe/out of harm etc. Mil joked human boys and doggy boys! Anyway shortly afterwards I was feeding ds2 his tea in the garden (sunday was a lovely day) when I heard mil not only explaining how to open the gate but getting him to go it himself to make sure he understood. Like I said its only a matter of time etc but I was not going to be the one to explain especially as his 11 month old brother depends on them for his safety! Didn't say anything at the time as I was caught up with ds2 and then one thing after another and the moment was lost! I was however very annoyed thinking about it later! aibu?