A Sheldon who is hopped up on cold medicine.

A bigger question is: Where are Sheldons pants?

The day starts out fine.

The Recollection Dissipation

Credit: Michael Yarish/CBS

Sheldon double dips back and forth, spouting off solutions left and right.

Much like the spork, feels like this idea will never work.

Spoiler alert: It does.

Its Penny who sees the early signs of a sickness coming on.

She reminds Sheldon that he is a delicate flower who got a cold while watchingFrozenand a nosebleed while watchingUp.

Over at the House of Wolowitz, Bernadette is having trouble accepting that her maternity leave is almost over.

She asks Stuart not to tell Howard, but Howard has a keen sense for when Bernadette is upset.

He naturally thinks hes the reason his wife is in a mood.

Howard has been sending Christmas and birthday cards.

What in the world?

Bernadette finally confides in Howard.

He understands and tells her that whatever she chooses to do, he will support her.

The good news is that Halley is a baby and she wont remember anything.

He says babies are stupid.

Examples include peek-a-boo and got-your-nose.

He has no recollection of how he got there.

Curse you, cold medicine!

He looks to Penny to help him through the protocol for remembering a lost evening.

Pennys first suggestion is for Sheldon to check his body for tattoos.

Sadly, our boy didnt get any ink during his wild night.

I would have rejoiced for a live long and prosper tat.

Raj uses Sheldons phone to check the places he visited.

Theres the apartment building, the university, and a cowboy bar.

Sheldon and Raj take a trip to the bar where they are greeted with a boisterous, SHELDON.

He bellies up to the barkeep, who knows Sheldon by name and presents him with the missing notebook.

The one with top secret quantum guidance system solutions.

Who would sing Soft Kitty to him when he gets sick?

What happened to our love?

HOWARD: Somethings going on with Bernadette.

Did she say anything to you?

Maybe it happens to aliens too.