Yes - these are jokes/witty humor related to the old DOS days. (generally back in the 80's). Feel free to post. 
The last things any computer user wants to see:
1. Please insert boot disk in drive A:
2. OS Not Found! (a variant on the above)
3. ~~~+++ NO CARRIER
4. The BSOD.
5. Format Drive C:\> ?

The last things any computer user wants to see:
1. Please insert boot disk in drive A:
2. OS Not Found! (a variant on the above)
3. ~~~+++ NO CARRIER
4. The BSOD.
5. Format Drive C:\> ?