Although the word "think" is a real word, it's not the one they meant to use.  Because Wendy's was making up words like "soquid" (a combination of "solid" and "liquid") and "fpoon" (a combination of "fork" and "spoon"), their proof reader must ahve thought any weird combinations were done on purpose. 

Unfortunately, that wasn't true - this was supposed to read, "thick and rich".

These table toppers cost millions to print, and were distributed all over the country.