Only Leonard would invoke science and particles and references to the creation of the universe at his own wedding.
But perhaps only Penny would be moved to tears by these references. And perhaps that's why these two are perfect for each other.
On September 21, The Big Bang Theory Season 9 will kick off with a wedding that has been eight years in the making.
And in our first look at scenes to come, we see Leonard reading his vows, Penny reacting in awe to them, the gang seemingly watching the ceremony from afar and then Leonard carrying his bride over the threshold.
Or attempting to do so, at least. Penny didn't marry him for his brute strength, that's for certain.
Check out the teaser here and then tune in The Big Bang Theory Season 9 Episode 1 in just a matter of days.