You can still buy these frames, new old stock, which tells you something.
Classic Bike Vintage Bikes Frames and Parts
Besides the frame being very whippy, you're likely to develop an irish accent so thick that your speech will be virtually unintelligble.
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.