Tears......

Some people Cry while eating or smelling food or even at mere site of food or even thinking about some delicious meal and vice versa. This is called "Crocodile tears syndrome".

Some people cry without tears because of a genetic disorder that results in lacking the ability to produce tears (alacrima).

Crocodile tears (or superficial sympathy) are a false or insincere display of emotion such as a hypocrite crying fake tears of grief. The expression comes from an ancient anecdote that crocodiles weep in order to lure their prey, or that they cry for the victims they are eating.