My boyfriend and I were playing baseball last night with some of our friends. Halfway through the game we took a break and he asked me to hold his balls for him whilst he went to the toilet.
All our friends were shocked when I went into the boys' bathroom with him.
Listen up, buttercup. The joke is that the boyfriend asked his girlfriend to hold his baseballs, but "balls" is also slang for testicles. So, everyone was surprised when she followed him into the men's room because they thought she was going in there to hold his junk. You probably didn't get it because you don't get any action yourself, do you?
