Bobby Newman:  Okay , top five inventions of mankind : Um , the wheel , submarines , penicillin ...
Stephanie Layne: Slippers , creme brulee , spoons ...
Bobby Newman: Wait . But now we have six top - five inventions .
Stephanie Layne: Then let 's do ten ... and add _ four _ more .
Bobby Newman: Yes . I wanted to add dry - erase markers anyway .