What annoying person might get up for one stroll? (6)
I believe the answer is:
dander
I believe this is a double definition.
'what annoying person might get up' is the first definition.
(getting someone's dander up is annoying them)
'one stroll?' is the second definition.
(dander can mean a stroll)
'for' is the link.
(Other definitions for dander that I've seen before include "One got up by the angry" , "Hackles" .)