The deep enjoyment of deliciousness expressed through a rapid oralsound, when fully salivating. This can be vocalised loudly for all the hear or kept on the downlow at a personal level.
Stirring a thai green curry and the vapour wafts up your nostrils causing and uncontrollable slourp to occur.
or
Visualising your first drop of water after 3 days lost in a desert creates an explosive sloooooourrrrrrrp.