Undercut...

I'm seriously grey but I'm so lazy I find it really dull to dye my hair. I put it off till I can bear the shabby roots no more. Last night I got shot of the grey and touched up the ends (ooer!) and today I went to the barbers for a zero.

Tonight I thought I'd take a photo to see how badly I'd dyed my neck.

The filtered to death result should tell you all you need to know about that.