no way I would do that before gametime.
If I know in advance to expect to get some I will usually treat myself to some porn w/o release a little while before playtime. It honestly seems to help build up some "supply" Then whenever I finally get together with my girl I got that extra teaspoon (ok, ok, ..coffee spoon) on tap that makes it feel like my brain just caved in after I cum.
now what sucks is when I've had sexy txts all day or been told about what fun we will be having later but in reality that evening rolls around n' shes got a headache, or sees or hears something on tv/radio, i say something dumb, etc. and then shes out of the mood and my balls' suitcases are all packed with no place to go