if x = the amount of vodka you think you had
then y = the amount of vodka you actually had.
artoholicanonms
if x = the number of hours that sxtxixtxcxh spends making twitter based web pages in a normal week
then y = the number of hours in a snow week
photophly
if x = phone calls you get when you're next to your phone
then y = phone calls you get when you're away from your phone
skrolikowski
if x = bugs you think you have left
then y = bugs you'll find when you launch
sxtxixtxcxh
if x = the number of coffee shops in your city
then y = the number of Starbucks on your street
skrolikowski