The Donation Oscillation
| Episode Number | 15 |
|---|---|
| Season | 12 |
| Aired | 2019-02-07 |
| Overview | Penny tries to seduce an abstaining Leonard to ruin his "donation" for her ex-boyfriend, Zack, and his wife, Marissa. Also, Wolowitz, Bernadette, Anu and Koothrappali turn Koothrappali's canceled bachelor party into a couple’s trip aboard the "vomit comet." |
| Runtime | 25 minutes |
| Absolute Number | 270 |
| Finale Type |