...I am betrayed by my APPENDIX,
a vestigial organ.
The Big Bang Theory Season 4, Episode 2
Ever had your APPENDIX out?
The Big Bang Theory Season 4, Episode 2
I removed an APPENDIX, a gall bladder
and about a foot and a half of bowel.
The Big Bang Theory Season 2, Episode 8
...in Appendix C: Future Commitments.
Number 37:
The Big Bang Theory Season 3, Episode 15
or in an APPENDIX
at the end?
The Big Bang Theory Season 12, Episode 9