Cram right into skimpy underwear (6)
I believe the answer is:
throng
'cram' is the definition.
Although both the answer and definition are verbs in their base form, I don't see how one could define the other.
'right into skimpy underwear' is the wordplay.
'right' becomes 'r' (common abbreviation).
'into' is an insertion indicator.
'skimpy underwear' becomes 'thong' (I've seen this before).
'r' inserted inside 'thong' is 'THRONG'.
Can you help me to learn more?
(Other definitions for throng that I've seen before include "Large numbers" , "Pack" , "Large gathering of people" , "Large densely-packed crowd" , "Come in great numbers" .)