D.B.T.K.
When you give someone such a good head that they spill their load before the kettle gets to the boil. Basically the fastest way to make tea and cum at the same time.
He did a D. B. T. K. so fast the kettle was still cold.
She did a D. B. T. K. and the kettle was like, 'I'm not even ready yet.'
They did a D. B. T. K. and the kettle had a heart attack.