Whats with the 'armpit' scene??

soon after the blouse stitching scene, follows this scene..
Vijayan is seen lighting up a cigar..he sees a saree and blouse clad Shenbagam walking holding a pot on her head..close up of vijayan's face..
the next scene the actress is seen without her blouse.. revealing her armpit!!!
WTF!!
Maybe the pereverted director wanted to showcase the equally perverted character vijayan's nasty thoughts on seeing Shenbagam..but this was too much!!