good spanking goes far, at least it did with me but he crossed the line, just like the day my dad punched me in the faced... it doesnt make him a bad person, it all depends on how they react after and if they never do it again.
i dont have kids but i def wont be afraid to provide a good spanking if necessary, but thats not THE way to punish. i also think lying is something that will never go unpunished in my house, when i grew up i pretty much did things and when caught never lied about them to my parents, and thats all i expect from my kids. i told them that i liked smoking pot and wanted to do it with their permission (that one didnt go very well), i told them when i first had sex (i was 14, dad bought condoms and was somewhat proud i think), just never really lied in general.