Here we go again... I wish you trumpet pros would decide what's what :+) . I'm assuming whoever maintains this website is a trumpet professional: http://www.trumpetexercises.net There's a great exercise sheet with Lip Trills: http://www.trumpetexercises.net/exercisegroup:flexibility#toc4 which are exactly what I described.I've seen others call these things Lip Trills too. But i've seen them referred to as lip slurs here and elsewhere. Aargh!!!