It relies on the homonymic RELATIONSHIP
between tick, the bloodsucking arachnid...
The Big Bang Theory Season 2, Episode 1
In 1890, Emile Dolbear determined
there was a fixed RELATIONSHIP...
The Big Bang Theory Season 3, Episode 2
No. To be completely honest, I've only
been in one long-term RELATIONSHIP.
The Big Bang Theory Season 9, Episode 8
A precise RELATIONSHIP that is not present
with ordinary field crickets.
The Big Bang Theory Season 3, Episode 2
'Cause we've got a deeply
unhealthy RELATIONSHIP.
The Big Bang Theory Season 7, Episode 2