The state of arousal felt by a fat person when they near a pie shop, burger bar or other food outlet.
Jono was doing so well, but as he passed Greggs, he got such an uncontrollable lard on that he simply had to rush inside and buy four steak slices, three pasties and a bag of doughnuts. The twat.
Used to describe a mans state of arousal when in the presence of a fat bird.
Ben:"Dude! Check out the 20 stoner!
Andrew:"Oh yeah baby, i got a lard on fo sure!"