if you swallowed a watermelon seed some people think that it could potentially sprout in your stomach meaning you'd literally be growing a watermelon inside of you now this is obviously not true your stomach acid would dissolve the seed before it had time to grow but there was a case of a man who swallowed a pea that ended up going down the wrong way and months later after being rushed to the hospital because of breathing problems a doctor discovered that the p had been ingested in the man's lung and because lungs are warm and moist the p was able to split open and sprouts into a plant