He pretends
he's in an ALTERNATE dimension...
The Big Bang Theory Season 3, Episode 7
...to introduce
an ALTERNATE topic of conversation.
The Big Bang Theory Season 4, Episode 7
An ALTERNATE and less likely interpretation
is that you could manufacture one.
The Big Bang Theory Season 1, Episode 5
Which only sits
on ALTERNATE years.
The Big Bang Theory Season 7, Episode 16
with the Jim Lee ALTERNATE
cover that you wanted.
The Big Bang Theory Season 5, Episode 5