Usually at the end of playing a set of notes, I have noticed guitarists move a string up and down on the last note of that part (although not so much such that it classifies as a bend).
What is this for? Some kind of smoothening out of the note?
I have seen Eric Clapton do it a lot so don't know if it's a personal thing or a guitarist technique for better sounding music.
If the description above is not sufficient, watch 2:33-2:35 of this Clapton video to see what I mean