When a person consumes too much weed in a short amount of time which leads to a high heart rate, dizziness, nausea and shakiness. The term is used mainly in Ireland.
Man 1: "Did you hear that Ben fella pulled a whitener? He looked like fucking Casper the ghost!"
When someone stands next to you while your picture is taken, then uses it as an implied endorsement in their political campaign. Can also be done with business cards, articles of clothing, your car and pets.
A phrase made popular in the 2020 Kootenai County, Idaho Sheriff election.
Be careful of even appearing in the same photo as him, he will Whitehead you on his Facebook page.
"WTF, why did you Whitehead me?" "Well I thought you was endorsin' me"