Thats because your such a notty notty girl and your supposed to do notty things in incognito mode only, hush hush. Thats the reason they have that mode, dont you get it? Google knows what are reading, google knows everything, even what panties you are wearing, believe me. Its telling you, if you really have to be so notty, be notty incognito. Google loves you. Amen.
But seriously, clear your browser cache and those notty little cookies.