1. mucus plug是一种能堵住宫颈口的粘液，以避免细菌什么的进入子宫，伤害胎儿，ross说passed the mucus plug，是指产程发动时，mucus plug就会伴随血液流出来，这个过程也叫bloody show，也就是快生了。

2.You don't stop for chunky. Carol她们那么急去医院的路上还去买chunky玩具, ross在埋怨她们.

3. used to have those bumper stick
Bumper sticker (rom Wikipedia, the free encyclopedia. )
A bumper sticker is a message attached to the bumper of vehicle to get attention of others. They can be political or humorous, may or promote a or attack a particular stand on any issue.
Examples:
(USA) Clinton Gore 96 [democratic party bumper sticker]
(USA) Clinton Gone 96 [republican party bumper sticker] hoho
第二句是对rach说的,先前rach开ross玩笑被瞪,她抱怨为什么chan开就行,chan就说你得挑时间.