Tuipulotu is one of eight Scots to have been selected, but says he had resigned himself to missing the tour when injury struck on the eve of the Six Nations.
He has not played since that training injury but it now close to a return.
“My dad was over at that time and he’ll be able to tell you I was walking around the house going, ‘I guess that’s me’,” he said. “I just thought that was the way that it panned out.
“I was playing the best rugby in my life and I got hurt. You battle your own emotions and stuff like that all the way up into selection saying, ‘am I even still being considered?’ and stuff like that.
“But then it all, the culmination of when finally your name gets read out, I can’t tell you that feeling. It’s euphoria, it feels like.
“I just want to go out in Australia and perform in big games for such an amazing team. The Lions is rich in history and I just want to add my piece to that book.”