Dick invites Mary and Roy over for dinner so the Solomon "family" can observe sibling dynamics firsthand. They are surprised to find that Mary and Roy mostly spend their time bickering and irritating each other.
is the ninth episode of the first season of the classic sci-fi sitcom 3rd Rock from the Sun , which originally aired on March 4, 1996 . [S1E9] Ab-dick-ted
"3rd Rock from the Sun" Ab-dick-ted (TV Episode 1996) - IMDb Dick invites Mary and Roy over for dinner