The Donation Oscillation The Big Bang Theory : Season 12 Episode 15
TV-PG CBS 22m
Aired: February 7th, 2019 @ 8:00 PM EST on CBS
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.
