Replying to Hand Signals

Have youve ever had it happen when your coming into a jump and your freinds decide that theyre gunna cheer you on b clapping theyre poles over theyre head and when you see it, it looks like someones inthe landing? Or even worse, them signalling someones in the landing when you think theyre cheering you on? Newscooler.com should come up with hand signals so noone else will have to miss the 60 footer because theyre freinds are assholes!