Is there a specific weight that makes it uncomfortable for guys to have a girl sit in their lap? or does any weight 90-150lb make it regardless?

He has mentioned a few times of wanting me to be in his lap to cuddle and all, but I can't help but think of how insecure I'd be, about him being uncomfortable if I did, or hurting him or whatever. I'm around 100-105 lb myself, so I imagine it'd be heavy if it were me.

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+1 y
I realize the correlation between weight and height; for additional context, I am personally 147 cm, but I asked about weight since I was wondering about the possibility of blood restriction or discomfort if one were to sit in another's lap, and if that would still apply.
Is there a specific weight that makes it uncomfortable for guys to have a girl sit in their lap? or does any weight 90-150lb make it regardless?
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