Heat a saucepan and add in the drained tuna flakes.
Saute it till the tuna becomes dry. Switch off and allow to cool.
Add in the corn kernels, mayonnaise, salt and pepper and mix well until incorporated.
Spread the mixture into two slices of bread and continue till done.
Toast them in your sandwich maker till done.
Serve warm as a tea time snack, as is or with ketchup and chilli sauce!