Teemo's w interrupts affect from Homeguard Boots
If you have Homeguard boots on Teemo when you activate his "w" ability (called Move Quick, I think?) the affect from the Homeguards is removed and replaced only by the speed boost from his ability. I think how this should work is either that you only get Homeguard's affect or you get Homeguard*move quick, but definitely not that you completely lose the affect from the boots.