Stand up for me will you?

I am now a regular visitor of  this genius page. Today, I struck  into a very solid rule:

501. Never shake a man’s hand sitting down.(via Captain Luke R. Barnes, USMC)

And I thought I was insane for feeling not so comfortable if I see a person- stays seated- when shaking one's hand. Especially to and older woman or man. I once actually asked a 20 y/0  man to stand up for me and re shake my hand as I told him ; " This, is how you do a proper hand shake, young man". He cringed.
Euuuyhh... For a while, I kept thinking whether I am crazy or just too iritating.
But now, I am relieved. I am not crazy. Not so much.

this tumblr