by spajk88 November 2, 2010

by MongyMax December 1, 2007

by samdog618 January 21, 2020

by larryloving1234 December 14, 2012

When a man or a woman are heavily capable of issuing the most incredible sex you will ever receive. 'Top shag' is a title only appointed to those who have a reputation of being the utmost best in the sack. E.g. Nathan 'top shag' Smith was the best shag I've ever had!
by wigley worm June 3, 2014

by Sugaree January 8, 2003

The effects are similar to jet lag, but on this occasion the overwhelming tiredness is owing to a night full of bollock-draining sex. the following day they can't function properly in every sense of the word.
-Fancy coming with us for a kick about this morning?
-Fraid I can't, mate. I just don't have the energy.
-Suffering from Shag lag, eh?... Lucky bugger.
-Fraid I can't, mate. I just don't have the energy.
-Suffering from Shag lag, eh?... Lucky bugger.
by Bottom Face April 3, 2011
