[ xkcd ]A webcomic of romance, sarcasm, math, and language.

heartbeat frequency birth frequency death frequency wikipedia frequency vibrator frequency
car_china frequency car_japan frequency car_germany frequency car_us frequency car_elsewhere frequency
kiss frequency fire_dept frequency holeinone frequency turnsignal1 frequency turnsignal2 frequency
earthquake1 frequency earthquake2 frequency earthquake3 frequency earthquake4 frequency parliament_toilet frequency
flight frequency book_mockingbird frequency cat_mockingbird frequency phoenixshoes frequency phoenix frequency
keys frequency amelia frequency dogbite frequency bike frequency eagle frequency
bottles frequency recycled frequency meteor frequency oldfaithful frequency shark frequency
us_cancer frequency us_cancer_death frequency dog frequency cat frequency wedding frequency
domain frequency house frequency tattoo frequency pulsar frequency facebook frequency
iphone frequency littleleague frequency ndsex frequency bieber frequency denverpizza frequency