elastic balls 

When a man puts an elastic band around his ball bag to keep his penis erect by cutting the flow of blood to his penis

Have you ever tried elastic balls? It keeps ur penis hard so you can wank all night

elastic balls by mitch00uk April 10, 2015

elastiballs 

Stretchy testicles, these kind of balls can almost be used as a condom

Carter: Have you seen how stretchy Gunnar’s balls are?

Jack: Yeah, he’s got elastiballs

elastiballs by NoxWayyy December 8, 2020