Do you allow your preschool and elementary age children to use the word “sucks” in their speech?

Or if you don’t have children yet will you allow your future young children to use the word “sucks” in their speech?

The reason I’m asking is that every year my kids participate in the summer reading program at our local library and they get a prize bag that includes a straw with the word “sucks” on it. Something like “it only sucks when the book is over”.

I don’t like how it sounds and it’s a slang word, so I remove the straw before giving them their prize bag.

Just curious what other people think about this word being used by children.