It’s Valentine’s Day, and we’re college students, so everyone is talking – or at least thinking – about love and sex. Before you engage in the latter, test your sexual health knowledge and see whether you retained anything you learned in that high school sex ed class.

1. Young people make up what percentage of new sexually transmitted infections?

a) 30 percent

b) 50 percent

c) 70 percent

2. True or False: HPV only causes cancer in women.

a) True

b) False

3. Which of these facts is false?

a) Sex improves sleep quality.

b) Sex decreases prostate cancer incidence in men.

c) Women can’t get pregnant from pre-ejaculate fluids.

4. True or false: Only certain lubricants are safe to use with specific sex toys.

a) True

b) False

5. Which of the following sexually transmitted diseases is not curable with antibiotics?

a) Chlamydia

b) Gonorrhea

c) HPV

6. What percentage of women infected with HPV will see the infection clear within two years?

a) 90 percent

b) 50 percent

c) 25 percent

7. What’s the difference between an STD and an STI?

a) They’re the same thing

b) An STI precedes an STD

c) An STD precedes an STI

8. The average American penis is __ long when erect.

a) 5.3 inches

b) 6.4 inches

c) 5.6 inches

9. Jonah Falcon has the world’s longest penis. How big is his erection?

a) 13.5 inches

b) 15 inches

c) 12 inches

10. How deep is the average unaroused female vagina?

a) 2 to 3 inches

b) 3 to 4 inches

c) 4 to 5 inches

11. True or false: The vagina can double in size when aroused

a) True

b) False

12. Are oil-based lubricants, like Vaseline and baby oil, safe to use?

a) Yes

b) No

13. A half-hour of active sex burns how many calories?

a) 100

b) 300

c) 200

14. What’s the most common STD/STI in America?

a) Gonorrhea

b) HPV

c) Syphilis

15. What percentage of Americans age 14 to 49 have genital herpes?

a) 16 percent

b) 31 percent

c) 24 percent

16. Speaking of genital herpes – is it more common among men or women?

a) Women

b) Men

17. On average, how many sperm are in each ejaculation?

a) 1 billion

b) 500 million

c) 300 million

18. True or false: some mammals have bones in their penises.

a) True

b) False

19. How many heterosexual men younger than 45 said they’ve tried anal sex, according to a Centers for Disease Control and Prevention report?

a) 44 percent

b) 51 percent

c) 56 percent

20. What about women?

a) 25 percent

b) 36 percent

c) 40 percent

21. What’s the effectiveness rate of birth control pills, assuming correct daily use?

a) 93 percent

b) 99 percent

c) 99.9 percent

22. What’s the effectiveness rate of condoms, assuming correct use?

a) 80 percent

b) 95 percent

c) 98 percent

23. What’s the effectiveness rate of pulling out?

a) 50 percent

b) 72 percent

c) 96 percent

24. If used correctly, emergency birth control (the morning-after pill) lowers a woman’s risk of pregnancy by:

a) 75 percent

b) 89 percent

c) 97 percent

25. What percentage of men and women, respectively, reported having experienced a same-sex sexual encounter?

a) 6 percent of men, 12 percent of women

b) 10 percent of men, 16 percent of women

c) 8 percent of men, 14 percent of women

26. How many calories are in a teaspoon of semen?

a) 5 calories

b) 12 calories

c) 30 calories

27. True or false: Shaving your pubic hair increases your chance of getting an STD/STI.

a) True

b) False


1. b

2. b

3. c

4. a

5. c

6. a

7. b

8. c

9. a

10. b

11. a

12. b

13. c

14. b

15. a

16. a

17. c

18. a

19. a

20. b

21. b

22. c

23. c

24. b

25. a

26. a

27. a


0 to 9 points -- Your sexual health knowledge could use some brushing up. Give your high school health teacher a call, or try reading a book. Cosmopolitan magazine works, too.

10 to 19 points -- Congratulations! You’re average.

20 to 27 points -- Maybe you should be the one teaching the sex ed classes.