The Headboard

After Peter grosses out Todd by revealing that he and Annie broke their headboard during sex (the night the Berlin wall came down), he and Annie decide their sex life needs a boost... which leads Annie to the porn section of the video store. Meanwhile, Todd tries to get even with a rival dentist, Dr. Fishman, by having Tim dress up as a tooth and hand out flyers in front of Fishman's office, but it results in Tim getting beat up (and brushed) by another tooth.