Top Definition
a boyfriend who tries to get u to sleep with him via sucking up to your mum.
please note:a mumsucker has no sexual interest in mums but will most likely act liek he does in secret, mothers will be flattered.
janices boyfriend is a total mumsucker, he helped her mum with the washing yesterday, he never does that for janice.
by mizzfizz May 17, 2006
5 Words related to mumsucker

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