To stop someone from stealing one of your tater tots. This usually happens when a hungry friend thinks you are distracted and reaches for a tot from your plate. Then you catch them in the act just in time.
Bob: So I told her I don't care what color -- Hey, bro! (looks down at plate and brandishes a fork threateningly) Lay off the tots! I'm going to eat those!

Tom: Dang! I just got tot blocked!
by ATL Livin' February 16, 2011
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When you are rejected sexual intercourse because of the presence of a toddler
I had to babysit the other day, and that little kid totally tot blocked me.
by ThatsGWHY May 19, 2011
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