I didn't have time to post this weekend so this is a 3-for-1 entry.
Sunday's funny word of the day: gerbil
A Gerbil is a small mammal of the order Rodentia. Once known simply as "desert rats", the gerbil subfamily includes about 110 species of African, Indian, and Asian rodents, including sand rats and jirds, all of which are adapted to arid habitats. Most are primarily diurnal  (though some, including the common household pet, do exhibit crepuscular behavior), and almost all are omnivorous.
There is an exhaustive Wiki entry on gerbils but, interestingly, no mention of Richard Gere, which I'm sure he's happy about.
Saturday's funny word of the day: bosom
A personal favorite that doesn't really require a definition. Another word that is best described by other funny words, such as boobs, boobies, jugs, tatas, titties, etc. For some reason, though, bosom evokes a grandmother's uniboob, not a sexy pair of breasts.
Friday's funny word of the day: mulch
In agriculture and gardening, mulch is a protective cover placed over the soil, primarily to modify the effects of the local climate.
I have what's known as a "black thumb" -- meaning anything I try to grow immediately dies -- but, while I have never used it myself, I like the word mulch very mulch, I mean much!