giving the slow clap to someone who clearly doesn't deserve an recognition of what they have done.
friend one: "Hey dude I got MOAB yesterday in MW3!"
friend two: claps slowly, unimpressed
friend one: "Hey stop skylering!"
Not telling a girl your about to cum and you finish in the back of her throat making her choke
Jim accidentally ended up skylering Amy when he forgot to say "I'm comming"