Patting Jokes

A blonde was driving her brand new, VERY expensive, Mustang convertible, when she saw her brunette friend. She thought that this was her chance to brag about it, so she drove over to her.
The brunette recognized her, and said, "Hey!" The blonde smiled; this was her chance. She said, "Hey, look what I got that you don't have!" patting her convertible.
The brunette smiled sweetly back and said, "Well, look what I got that YOU don't have," patting her brain.