You know, Pythagoras had
an IRRATIONAL fear of beans.
The Big Bang Theory Season 9, Episode 10
I realize it's IRRATIONAL,
The Big Bang Theory Season 10, Episode 18
And an IRRATIONAL constant.
The Big Bang Theory Season 5, Episode 16
Yes, but you didn't portray her
as completely IRRATIONAL.
The Big Bang Theory Season 1, Episode 7