Take one large coffee mug.
Mix together 4 tablespoons of plain flour, 4 tablespoons of sugar and 2 tablespoons of cocoa powder.
It should look like this:

Pour in 3 tablespoons of milk, 3 tablespoons of oil and a splash of vanilla.
If you have any chocolate chips, mix them through too.
Hopefully you now have a rich chocolate batter:

The cake will rise like a souffle over the top of the mug and look quite impressive.
Top it off with chocolate syrup, double cream, ice cream or whatever you can find..
In under 5 minutes, you can waltz back to the couch with this!

Happy Valentine's Day! ;)