When you go to Val Thorens and claim to have hooked up with at lot of women, that none of friends mysteriously seem to have witnessed, but in reality you spent the majority of your time engaged in extreme-bondage-homosexual-intercourse.
Rasmus: "did you see any women that mathias hooked up with on the ski trip."
Asger: "No, and apperently none of the other guys did neither."
Rasmus: "Ahh, he must have done The Skiing Matas yet again."