How can I sneak my boyfriend in without my neighbours seeing me?

my mum never has problems with him coming around and neither does my dad but they are going on holiday tomorrow and they told me to not bring people around. They have told the neighbours to keep an eye on me to see whether im bringing anyone back home and i know that they will see me entering my house with him. Does anyone know any ways that i can ensure that nobody will see me walking into my house with him? A lot of the neighbours like to sit in their windows watching the whole neighbourhood so i understand it will be difficult...
How can I sneak my boyfriend in without my neighbours seeing me?
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