bundle of nerves

Being in point of fact a complete bundle of nerves and nothing else, his thin figure shook like a harp-string in painful excitement at a contretemps which would scarcely have quickened the pulse of an ordinary man.

"Come and take lunch with me." The speaker was a walking, talking bundle of nerves, clothed in black broadcloth. A flawless diamond sparkled on the scarlet scarf that peeped above his close-fitting Prince Albert coat, and a pair of roguish eyes danced above two rosy cheeks.