I was showing Nick how simple it was to implement a JavaScript function that checks to see if the value keyed into a textbox is a number (without a regex). If it's not, then the key will not be entered as a valid value. I told him that for now, I'm restricting the values to numbers (0, 1, 2, 3..) and to - (dash), . (period) and ( ) (left and right parenthesis) to allow for formatting. He looks at me and says, "But that doesn't stop the user from entering boobies into the text box!!"

...  ...  ...

...Puzzled for a minute, I was like...wtf, boobies? And then I realize what he was talking about. So for Nick, here are these big boobies.

(.) (.)