( It ( ( is ( ( ( ( the display ) ( of temper ) ) or ) ( ( ( ( aggressive driving ) ( by ( a motorist ) ) ) , ) ( towards ( ( other motorists ) ( -LRB- ( or ( ( sometimes pedestrians ) -RRB- ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ is) (NP (NP (NP (DT the) (NN display)) (PP (IN of) (NP (NN temper)))) (CC or) (NP (NP (JJ aggressive) (VBG driving)) (PP (IN by) (NP (DT a) (NN motorist))) (, ,) (PP (IN towards) (NP (NP (JJ other) (NNS motorists)) (PRN (-LRB- -LRB-) (CC or) (ADJP (RB sometimes) (JJ pedestrians)) (-RRB- -RRB-))))))) (. .)))
It is the display of temper or aggressive driving by a motorist, towards other motorists (or sometimes pedestrians).
(ROOT (S (S (VP (VBN Exemplified) (PP (IN by) (NP (ADJP (VBG baring)) (NNS teeth))))) (, ,) (NP (NP (JJ aggressive) (NN type)) (PP (IN of) (NP (NNS displays)))) (VP (VP (VBP are) (ADJP (JJ common) (PP (IN in) (NP (DT the) (NN animal) (NN kingdom))))) (, ,) (CC and) (VP (ADVP (RB sometimes)) (VBP serve) (PP (IN as) (NP (DT a) (`` `) (NN bluff) ('' '))))) (. .)))
Exemplified by baring teeth, aggressive type of displays are common in the animal kingdom, and sometimes serve as a 'bluff'.