CINEMANIA: Guess the movie title

Bubbles and Barbie, two blonde sisters had promisedtheir Uncle, who had been a seafaring gentleman allhis life, to bury him at sea when he died.
Of course, in due time, he did pass away and the twoblondes kept their promise. They set off fromClearwater Beach with their uncle all stitched up ina burial bag and loaded onto their rowboat.
After a while Bubbles says, 'Do you think we're outfar enough, Barbie?' Barbie slipped over the sideandfinding the water only knee deep said, 'nope, notyet Bubbles'. So they row a little farther.... AgainBubbles asks Barbie, 'Do you think were out farenough now? Once again Barbie slips over the sideand almost immediately says, 'No, this will neverdo, the water is only up to my chest.'
So on they row and row and row, and finally Barbieslips over the side and disappears. Quite a bit oftime goes by and poor Bubbles is really gettingworried when suddenly Barbie breaks the surfacegasping for breath. 'Well is it deep enough yet,Sis?'
'Yes, finally. Hand me the shovel.'