Similiar to a one night stand,
Except being stopped halfway through and asked to leave
Man A- 'How did it go with that chick last night?'
Man B- 'Pah, it were horrible, I think my cock was too big and was hurting her, so she stopped halfway through and asked me to leave'
Man A- 'Thats weak dude, I thought she was into you too'
Man B- 'Yep, just a half-night stand for me'