The act of giving head, blow job, oral, eating out, etc... the word is a combination of "slurp" for sucking & "derp" for sounds being made while attempting to talk with genitalia in ones mouth.
It's that time of the month, so Jenny gave Johnny a little slurp-a-derp to calm him after his busy day.
by RaCeR_X December 03, 2013
by Whatevrgirl March 12, 2021
by Tynn April 26, 2021
Slurp or derp is commonly referred to as the opposite of split or swallow, commonly referred to in the lesbian community. Slurp is to swallow as derp is to spitting.
by 9cubicfeetofwhateveryouwant February 28, 2017