Thanks folks, very reassured that I'm not the only one who was dismayed to realize that "glad" means "glad" and is spelled "glad" and yet is pronounced "glel" LOL!!! I'm getting better at shifting from the palatalized "L" to the tongue-on-the-lower-teeth "L", but as I try to repeat this phrase, I'm having a hard time shifting from one to the other within the same word. Am I right to think that in "glad" (or "glel" laugh) the first "L" sound is tongue-tip-on-top-teeth/palate, and the second "L" sounds is tongue-tip-on-bottom teeth?
In contemporary English, "gay" is never used to mean happy; your use of it is antiquated. These days, it's almost exclusively used to mean "homosexual." Another use is as a synonym for "stupid," which is an example of words' connotations transforming from something neutral to something negative. (See the etymology of "hussy," for example.)