![Ha, ha. Maybe your lifetime, I went to space.
Ha, ha. Maybe your lifetime, I went to space.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Ha, ha. Maybe your LIFETIME, I went to space.
The Big Bang Theory Season 6, Episode 24
![And taking her first step towards
a lifetime of laughter,
And taking her first step towards
a lifetime of laughter,](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
And taking her first step towards
a LIFETIME of laughter,
The Big Bang Theory Season 9, Episode 8
![How can you say that? The scientific
opportunity of a lifetime presents itself...
How can you say that? The scientific
opportunity of a lifetime presents itself...](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
How can you say that? The scientific
opportunity of a LIFETIME presents itself...
The Big Bang Theory Season 2, Episode 23
![...come but once in a lifetime.
...come but once in a lifetime.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
...come but once in a LIFETIME.
The Big Bang Theory Season 3, Episode 16
![A whole lifetime
ahead of you
A whole lifetime
ahead of you](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
A whole LIFETIME
ahead of you
Breaking Bad Season 5, Episode 11