Happy Birthday, Pappy!
"It works! It works!," cried old man Sid.
His wife hollared from the kitchen, "Quit foolin' around and get outta that bathroom - you ain't no kid."
...and mumbled to herself how he ain't sounded that happy since their honeymoon in Niagara.
Then Sid appeared at the door with his dick in one hand and in the other, Viagra.