Idiom
give someone the glad hand
Theme: SOCIAL - INSINCERE 
to give someone an overly friendly welcome; to give someone insincere attention. (Informal.)Here comes Tom. Watch him give us the glad hand and leave.These politicians give you the glad hand and ignore you after they are elected.
Idiom
give someone the glad hand
Theme: SINCERITY - LACKING 
to give someone an overly friendly welcome; to give someone insincere attention. (Informal.)Here comes Tom. Watch him give us the glad hand and leave.These politicians give you the glad hand and ignore you after they are elected.