what a joke!; don't make me laugh!; to split one's sides laughing; to be convulsed with laughter; (lit.) to boil tea with one's navel (using the heat generated by laughing)
what a joke!; don't make me laugh!; to split one's sides laughing; to be convulsed with laughter; (lit.) one's navel boils water (using the heat generated by laughing)
what a joke!; don't make me laugh!; to split one's sides laughing; to be convulsed with laughter; (lit.) to boil tea with one's navel (using the heat generated by laughing)