Over the years, we've formulated many
theories about how he might REPRODUCE.
The Big Bang Theory Season 2, Episode 6
But if successful, I will map
and REPRODUCE your thought processes...
The Big Bang Theory Season 4, Episode 3
...that seek to REPRODUCE
using humans as their host.
The Big Bang Theory Season 4, Episode 20
I'm quite aware of the way
humans usually REPRODUCE...
The Big Bang Theory Season 4, Episode 1