Person A - "Ye daft bastard I'll punch ye square in the face!"
Person B - "No need ta fight laddie. How's about I Ey just give you the highland kiss!"
At which point Person B would grab the head of their enemy and slam his or her forehead into the central face area of Person A. Effectively ruining their day.
After having sexual intercourse with a woman, when the man forgets to pull out and accidently ejaculates inside the woman and the woman becomes very upset, the man will say to the woman, "Dont worry, for I am the Highlander". Since the highlander can't get women pregnant this is a good way to shut the said woman up. If the woman is unconvinced the man can then grab a fork and shove it in a electrical socket and while being electrocuted he can scream 'THERE CAN ONLY BE ONE!"
1) The fictional character Duncan MacLeod in the TV series "The Highlander"
2) To seriously rough up your sex partner during sex.. to the point where they could be near death, but then they "come back to life".
Dave was fucking his girlfriend and decided to pull the highlander. So he started slapping her ass.. then pulling her hair.. then he started throwing haymakers into her ribcage.. then he pounded the back of her skull with his fist until she went into a coma.
9 weeks later SHE recovered from the coma, successfully completing the highlander Dave was going for.
The two are still together, as they were avid highlander fans and she's a freaky girl when it comes to sex.