retarded airport security

The funniest thing just happen to me 10min ago. I am at check in with my family and my moms bag gets stopped. they look through it and find a keychain knife. they take it away and my parents start to fight with them. There was a sign saying u could bring blades that are shorter then 4inches. In the end they take the knife.
5min later my dad pulls out his pocket his keychain knife and we all start laughing. Then my sister takes out her 10inch knitting neddles (which are also prohibeted) I say what the fuck! how did they not detected them they have to be retarded not to see 10inch needles. Anyways that's my story.