duck and swoop 

An action where one avoids an agressive or unwelcomed advance by 1) ducking under the inital advance, then 2) swooping out of the situation. This escape technique was created and spread to help others get out of sticky situations while causing the least amount of awkwardness.

If a guy or girl is making unwelcomed advances towards you, as they reach out, duck under their arm(s) and swoop out of there as quickly as possible- to 'duck and swoop'.

duck and swoop by The new guy April 1, 2007