On a normal calculator you can type words into a calculator. Say you want to type 'shell'. Type '77345' into your calculator and rotate it the other way. You will see 'shell'. More details available at en.wikipedia.org .
There once was a girl with 69 boobs, (type in 69 on calculator) and that was to,to,to many(type in 222) so she went and got 58 stitches (multiply by 8) and that left her.... (turn calculator upside down) BOOBLESS. Weird but kinda funny lol