'Gigity' is the catchphrase of Glen Quagmire from the animated comedy Family Guy and is used to indicate his arousal or use of a sexual double-entendre in a similar fashion to 'Bow-chicka-bow-wow' or 'that's what she said'
The mean distance is the same as the mean of a set of numbers,but this time, instead of them just being numbers, they're lengths. You just simply add up all the numbers and divide the total length,...