I got hit by a wasp or hornet in the neck and it went down my shirt. Got me once on the chest pretty much right away so I started smacking and thought I got him. About ten minutes later he got me again on my side. The second time I got off the bike, shirt off etc. Glad I was on a pretty much empty section of the bike path. I'm sure it was quite the sight. Some weirdo on his bike smacking him self like crazy then stripping down...Never did find the thing but he got me good both times.