1)
Why did she say "until now you lied to me"?
1.
Malbim: The first time you defended your words, but now I see that you jested with me both times!
2)
What are "Machlefos"?
1.
Rashi: They are locks of hair.
3)
What is the meaning of "Im ha'Maseches"?
1.
Rashi: On the beam (on which weavers arrange the warp (lengthwise) threads on a loom).
2.
Radak, based on Targum Yonasan: [His locks must be woven] with fabric being woven on a loom.