The Hofstadter Isotope
🎞️ S2 E20 🤔 Gray area

The Big Bang Theory

Is The Big Bang Theory S2 E20 OK for kids?

The Hofstadter Isotope

While a fellow comic book-loving pal of the guys romances Penny, Leonard and Wolowitz venture out into the world of "Ladies' Night" at a local bar.

📺 Where to watch

Netflix, HBO or Disney+ — catalogs differ by country.

🛒 Where to buy

Digital seasons or a box set to keep.

Content guide

👊 Violence
💋 Sex
🙊 Language
⭐ Overall

Preview first — about 10+

The Big Bang Theory S2 E20, “The Hofstadter Isotope”, scores 1/5 for violence, 3/5 for sex and 3/5 for language, for an overall kid-rating of 3/5 — Preview first — about 10+. While a fellow comic book-loving pal of the guys romances Penny, Leonard and Wolowitz venture out into the world of "Ladies' Night" at a local bar.

Across the episode we counted 11 flagged moments in 5 themes: Sex & hookups (3); Nudity & bodies (2); Violence & injury (1); Swearing (4); Alcohol & drugs (1). Every moment below is either a direct quote from the episode transcript or a short description of what happens on screen, so you can decide before you press play.

Watch for — every moment, theme by theme

Sex & hookups 3 moments

How Sex & hookups shows up in The Big Bang Theory S2 E20:

  • Howard I’m a horny engineer, Leonard. I never joke about math or sex.
  • Howard You can modify it to calculate our chances of having sex by changing the formula to use the number of single women in Los Angeles, the number of those who might…
  • Howard Neediness times dress size squared. Crunching the numbers, I come up with a conservative 5,812 potential sex partners within a 40-mile radius.

Nudity & bodies 2 moments

How Nudity & bodies shows up in The Big Bang Theory S2 E20:

  • Howard Okay! Let me just go inside and slip off my underwear.
  • Leonard (to Raj): Do you…? (Raj checks his underwear) Let’s go.

Violence & injury 1 moment

How Violence & injury shows up in The Big Bang Theory S2 E20:

  • Howard Get it? I mean, they’re laughing, we’re laughing, and then we get them up to about a .15 blood alcohol level, and tell them we’re millionaires.

Swearing 4 moments

How Swearing shows up in The Big Bang Theory S2 E20:

  • Raj Well, what are we waiting for? Let’s bounce, bitches.
  • Sheldon I am asserting, in the event that Batman’s death proves permanent, that original Robin, Dick Grayson, is the logical successor to the Bat Cowl.
  • Stuart But returning to the original issue, Dick Grayson became Nightwing, a superhero in his own right.
  • Howard (They turn to see Raj with his tongue down the throat of a “larger lady” by the bar.) Lucky bastard.

Alcohol & drugs 1 moment

How Alcohol & drugs shows up in The Big Bang Theory S2 E20:

  • Howard Which means, as the evening progresses, we will get better looking courtesy of 99 cent margaritas and two-for-one Jell-O shots.

What to watch in The Big Bang Theory · Season 2 guide

Watch With The Kids · You kids — your rules! · Informal parent guidance, not an official rating.